CN103943000A - Trigonometric function image demonstration device - Google Patents
Trigonometric function image demonstration device Download PDFInfo
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- CN103943000A CN103943000A CN201310023431.5A CN201310023431A CN103943000A CN 103943000 A CN103943000 A CN 103943000A CN 201310023431 A CN201310023431 A CN 201310023431A CN 103943000 A CN103943000 A CN 103943000A
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Abstract
The invention discloses a trigonometric function image demonstration device. The trigonometric function image demonstration device comprises a drawing board assembly (1), reference cylinder assemblies (2), locking sheets (3), a reference cylinder dwang (4), a connection rod (5), tangent T-shaped guide rails (6), cotangent T-shaped guide rails (7), a vertical sliding rod assembly (8), a tooth form belt (9) and slide block cylinders (10). The two reference cylinder assemblies (2) are respectively inserted into the two holes of the drawing board assembly (1) and the locking sheets (3) are inserted into the reference cylinder assemblies (2) for axial fixation. The two tangent T-shaped guide rails (6) and the two cotangent T-shaped guide rails (7) are respectively tangent with the right sides and the left sides of the outer circles of the two reference cylinder assemblies (2), are parallel to the Y axis (1-4) of the drawing board assembly (1) and are in adhesive connection with the drawing board (1-1) of the drawing board assembly (1). The two guide rails are internally provided with the slide block cylinders (10). The advantages are as follows: trigonometric function images can be drafted in a quantification mode within positive and negative 360-degree scopes.
Description
Technical field
Technical solutions according to the invention belong to mathematical model field, concretely, belong to the mathematical model field of how much, triangle, projection or perspective use, according to International Patent Classification, belong to G09B23/04.
Background technology
Existing Trigometric-function demonstrator, as China's patent No. 00221729.5 " universal trigonometric function demonstration device ", it comprises a base plate of making to have in advance flat square coordinate system and unit circle, a hinged point is set in the center of circle, a length is installed on hinged point to be greater than unit circle diameter and to be parallel to the whole edge strip bar of the angle α pulling at the end, then at Gai Tiaoganju center, a long measure place establishes a hinged point again, on this hinged point, install one centered by fulcrum, length equals two long measures and is parallel to the sinusoidal bar bar of base plate.In the time of the whole edge strip bar of any angle of rotation α, can present the arbitrarily moving all trigonometric function value sizes in angle and change of properties.Its weak point: this demonstration device can only be estimated hinged point to variations such as x axle vertical ranges, can probably understand this function trend, but explicit function change picture quantitatively.
Summary of the invention
The object of the invention is to propose a kind of trigonometric function image demonstration device, it can overcome the deficiency of above-mentioned demonstration device, and explicit function change picture quantitatively can be drawn trigonometric function overall process, quantitative change picture within the scope of positive and negative 360 degree.
The object of the present invention is achieved like this: this trigonometric function image demonstration device is made up of drawing board assembly, basic circle column assembly, locking plate, benchmark cylinder dwang, connecting rod, tangent T shape guide rail, cotangent T shape guide rail, vertical sliding bar assembly, odontoid belt, slide block cylinder.Two basic circle column assemblies insert respectively in two holes of drawing board assembly, and insert locking plate axial restraint.While drawing sine function image, two benchmark cylinder dwangs insert respectively two basic circle column assembly end centralized positioning cylinders and sinusoidal positioning cylinder, on two sinusoidal positioning cylinders, insert connecting rod again.While drawing cosine function image, two benchmark cylinder dwangs insert respectively two basic circle column assembly end centralized positioning cylinders and cosine positioning cylinder, insert connecting rod on cosine positioning cylinder again.Two tangent T shape guide rails and two basic circle column assembly cylindrical right sides are tangent, and with the Y-axis line parallel of drawing board assembly, upper and lower two ends flush with the drawing board of drawing board assembly, and with bonding connection of drawing board of drawing board assembly.Two cotangent T shape guide rails and two basic circle column assembly cylindricals left sides are tangent, and with the Y-axis line parallel of drawing board assembly, upper and lower two ends flush with the drawing board of drawing board assembly, and with bonding connection of drawing board of drawing board assembly.In tangent T shape guide rail and cotangent T shape guide rail, slide block cylinder is set.
Drawing board assembly is made up of drawing board, reference circle, X-axis line, Y-axis line.Drawing board central horizontal direction is drawn X-axis line, and a strokes and dots reference circle is selected in X-axis line left side, makes approximately one centimeter of reference circle and drawing board top, left side distance.Reference circle right side and X-axis line intersection point place, extended distance is benchmark cylinder girth place to the right, and vertical direction is drawn Y-axis line, and this intersection point is zero point and zero degree reference point.This puts to the right extended distance is again benchmark cylinder girth, and these two benchmark cylinder girths are picture trigonometric function image district.Reference circle center perforate reference for installation cylindrical assembly, one-tenth is slidably matched.X-axis line two benchmark cylinder girth places to the right at zero point, perforate reference for installation cylindrical assembly, one-tenth is slidably matched.
Two basic circle column assemblies are made up of basic circle stud wheel, benchmark cylinder, centralized positioning cylinder, sinusoidal positioning cylinder, cosine positioning cylinder, locking plate groove.Basic circle stud wheel, benchmark cylinder, centralized positioning cylinder, locking plate groove are that entirety processes, and basic circle stud wheel pitch diameter is identical with basic circle column diameter.Sinusoidal positioning cylinder, cosine positioning cylinder are bonding connection with basic circle styletable face, and sinusoidal positioning cylinder, cosine positioning cylinder are all tangent with benchmark cylinder circumference, and both are at a distance of 90 degree.Two basic circle column assemblies are basic circle gear at drawing board rear portion, and two basic circle stud wheels are packed into and are meshed by odontoid belt, and two basic circle stud wheels synchronously rotate.
Vertical sliding bar assembly is made up of vertical sliding bar, connection bent plate, belt brace, pen cap slide block, paintbrush.The upper and lower two ends of vertical sliding bar be connected the bonding connection of bent plate, and circlewise around drawing board, the bonding belt brace of lower inside after connection bent plate, then by bonding strap surface under belt brace and odontoid belt.In this twice bonding process, must meet two requirements, the one, vertical sliding bar center line overlaps with Y-axis line, as the reference position at zero point, the 2nd, vertical sliding bar is parallel with drawing board, and makes its outerplanar and basic circle styletable face be positioned at same plane.Pen cap slide block, paintbrush insert in the groove of connecting rod and vertical sliding bar simultaneously.
Advantage of the present invention: this trigonometric function image demonstration device can, within the scope of positive and negative 360 degree, be drawn the image of trigonometric function quantitatively.
Brief description of the drawings
Fig. 1 trigonometric function image demonstration device elevation drawing.
Fig. 2 trigonometric function image demonstration device B is to view.
Fig. 3 trigonometric function image demonstration device A-A cut-open view.
Component part numbers:
Drawing board assembly 1, basic circle column assembly 2, locking plate 3, benchmark cylinder dwang 4, connecting rod 5, tangent T shape guide rail 6, cotangent T shape guide rail 7, vertical sliding bar assembly 8, odontoid belt 9, slide block cylinder 10, drawing board 1-1, reference circle 1-2, X-axis line 1-3, Y-axis line 1-4, basic circle stud wheel 2-1, benchmark cylinder 2-2, centralized positioning cylinder 2-3, sinusoidal positioning cylinder 2-4, cosine positioning cylinder 2-5, basic circle locking plate groove 2-6, vertical sliding bar 8-1, connect bent plate 8-2, belt brace 8-3, pen cap slide block 8-4, paintbrush 8-5.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
From Fig. 1, Fig. 2, Fig. 3, can find out, this trigonometric function image demonstration device is made up of drawing board assembly 1, basic circle column assembly 2, locking plate 3, benchmark cylinder dwang 4, connecting rod 5, tangent T shape guide rail 6, cotangent T shape guide rail 7, vertical sliding bar assembly 8, odontoid belt 9, slide block cylinder 10.Two basic circle column assemblies 2 insert respectively in two holes of drawing board assembly 1, and insert locking plate 3 axial restraints.While drawing sine function image, two benchmark cylinder dwangs 4 insert respectively two basic circle column assemblies, 2 end centralized positioning cylinders and sinusoidal positioning cylinder, on two sinusoidal positioning cylinders, insert connecting rod 5 again.While drawing cosine function image, two benchmark cylinder dwangs 4 insert respectively two basic circle column assemblies, 2 end centralized positioning cylinders and cosine positioning cylinder, insert connecting rod 5 on cosine positioning cylinder again.Two tangent T shape guide rails 6 and two basic circle column assembly 2 cylindrical right sides are tangent, parallel with the Y-axis line 1-4 of drawing board assembly 1, and upper and lower two ends flush with the drawing board 1-1 of drawing board assembly 1, and with bonding connection of drawing board 1-1 of drawing board assembly 1.Two cotangent T shape guide rails 7 and two basic circle column assembly 2 cylindricals left sides are tangent, and parallel with the Y-axis line 1-4 of drawing board assembly 1, upper and lower two ends flush with the drawing board 1-1 of drawing board assembly 1, and with bonding connection of drawing board 1-1 of drawing board assembly 1.Tangent T shape guide rail 6 and the interior slide block cylinder 10 that arranges of cotangent T shape guide rail 7.
Drawing board assembly 1 is made up of drawing board 1-1, reference circle 1-2, X-axis line 1-3, Y-axis line 1-4.Drawing board central horizontal direction is drawn X-axis line 1-3, and X-axis line 1-3 selects a strokes and dots reference circle 1-2 in left side, makes approximately one centimeter of reference circle 1-2 and drawing board 1-1 top, left side distance.Reference circle 1-2 right side and X-axis line 1-3 intersection point place, extended distance is benchmark cylinder 2-2 week strong point to the right, and vertical direction is drawn Y-axis line 1-4, and this intersection point is reference point at zero point.This puts to the right extended distance is again benchmark cylinder 2-2 girth, and these two benchmark cylinder girths are picture trigonometric function image district.Reference circle 1-2 center perforate installation fundamental circle assembly 2, is slidably matched.X-axis line 1-3 zero point is two benchmark cylinder 2-2 week strong points to the right, and perforate reference for installation cylindrical assembly 2, is slidably matched.
Two basic circle column assemblies 2 are made up of basic circle stud wheel 2-1, benchmark cylinder 2-2, centralized positioning cylinder 2-3, sinusoidal positioning cylinder 2-4, cosine positioning cylinder 2-5, locking plate groove 2-6.Basic circle stud wheel 2-1, benchmark cylinder 2-2, centralized positioning cylinder 2-3, locking plate groove 2-6 are that entirety processes, and basic circle stud wheel 2-1 pitch diameter is identical with benchmark cylinder 2-2 diameter.Sinusoidal positioning cylinder 2-4, cosine positioning cylinder 2-5 are bonding connection with benchmark cylinder 2-2 end face, and sinusoidal positioning cylinder 2-4, cosine positioning cylinder 2-5 are all tangent with benchmark cylinder 2-2 circumference, and both are at a distance of 90 degree.Two basic circle column assemblies 2 are basic circle gear 2-1 at drawing board 1-1 rear portion, and two basic circle gear 2-1 are packed into and are meshed by odontoid belt 9, and two basic circle gear 2-1 synchronously rotate.
Vertical sliding bar assembly 8 is made up of vertical sliding bar 8-1, connection bent plate 8-2, belt brace 8-3, pen cap slide block 8-4, paintbrush 8-5.The upper and lower two ends of vertical sliding bar 8-1 be connected the bonding connection of bent plate 8-2, and circlewise around drawing board 1-1, the bonding belt brace of lower inside 8-3 after connection bent plate 8-2, then by bonding to belt brace 8-3 and 9 times strap surfaces of odontoid belt.In this twice bonding process, must meet two requirements, the one, vertical sliding bar 8-1 center line overlaps with Y-axis line 1-4, as the reference position at zero point, the 2nd, vertical sliding bar 8-1 is parallel with drawing board 1-1, and makes its outerplanar and benchmark cylinder 2-2 end face be positioned at same plane.Pen cap slide block 8-4, paintbrush 8-5 insert in the groove of connecting rod 5 and vertical sliding bar 8-1 simultaneously.
The course of work of this trigonometric function image demonstration device is as follows: two benchmark cylinder 2-2 leading sections are all provided with the small column of three same diameters.Positioning cylinder 2-3 centered by two benchmark cylinder 2-2 centers, two benchmark cylinder 2-2 are that 70 degree are established sinusoidal positioning cylinder 2-4 with the tangent place of circle, two benchmark cylinder 2-2 are that 160 degree are established cosine positioning cylinder 2-5 with the tangent place of circle.Two T shape guide rails are axially installed along y by tangent place, two benchmark cylinder 2-2 left and right sides, and right side is tangent T shape guide rail 6, and left side is cotangent T shape guide rail 7.In guide rail, be provided with slide block cylinder 10.Two benchmark cylinder dwangs 4 insert centralized positioning cylinder 2-3, sinusoidal positioning cylinder 2-4,10, two slide block cylinder 10 tops of slide block cylinder simultaneously, then insert connecting rod 5, are the states of picture tan figure.Vertical sliding bar 8-1 is equipped with in connecting rod 5 central authorities, and both are connected by pen cap slide block 8-4.Pen cap slide block 8-4 can slide up and down along vertical sliding bar 8-1 groove, can horizontally slip along connecting rod 5 grooves again simultaneously.The upper and lower two ends of vertical sliding bar 8-1 are connected with being connected bent plate 8-2, connect bent plate 8-2 and are connected by belt brace 8-3 and 9 times strap surfaces of odontoid belt again.When 9 times strap surfaces of belt brace 8-3 and odontoid belt are connected, vertical sliding bar 8-1 center line should be overlapped with y axis 1-4, as the reference position at zero point.In the time pinning two slide block cylinders 10 and move down along tangent T shape guide rail 6, drive by benchmark cylinder dwang 4, benchmark cylinder 2-2 is rotated along clockwise direction, drive through odontoid belt 9, vertical sliding bar 8-1 moves respective distance to negative x axis 1-3 direction, and meanwhile, connecting rod 5 moves downward, by synthesizing of these two kinds of motions, paintbrush 8-5 will draw the tan curves from 70 degree to negative 70 degree.Now, extract connecting rod 5, extract benchmark cylinder dwang 4, take out slide block cylinder 10, again two benchmark cylinder dwangs 4 are inserted to centralized positioning cylinder 2-3 simultaneously, sinusoidal positioning cylinder 2-4, pin two sinusoidal positioning cylinder 2-4, two basic circle drive links 4 are turned over to 40 degree clockwise, extract again benchmark cylinder drive link 4, put into slide block cylinder 10 to relevant position, make two centralized positioning cylinder 2-3, slide block cylinder 10 in sinusoidal positioning cylinder 2-4 and two tangent T shape guide rails 6 inserts two benchmark cylinder dwangs 4 simultaneously, on two slide block cylinders 10, insert connecting rod 5, pinning two slide block cylinders 10 moves down, can draw again a tan curve, so constantly repeat, can within the scope of positive and negative 360 degree, draw many identical tan curves.Extract connecting rod 5, two cosine positioning cylinder 2-5 are turned to 110 degree, in two cotangent T shape guide rails 7, put into slide block cylinder 10, two benchmark cylinder dwangs 4 are inserted to centralized positioning cylinder 2-3, cosine positioning cylinder 2-5 and slide block cylinder 10, be connected with connecting rod 5 again, pin T shape guide rail slide block cylinder 10 and move along cotangent T shape guide rail 7, can draw cotangent function curve.Many tangent cutves are the same with drawing, and in positive and negative 360 degree, also can draw many cotangent function curves.
Because tangent T shape guide rail 6, cotangent T shape guide rail 7 can not be accomplished endless, so tangent, cotangent function curve cannot be signed in positive and negative 90 degree.
When two benchmark cylinder dwangs 4 insert centralized positioning cylinder 2-3 and sinusoidal positioning cylinder 2-4, two sinusoidal positioning cylinder 2-4 are connected with connecting rod 5 again, pin two sinusoidal positioning cylinder 2-4 rotation base director circle posts, will in positive and negative 360 degree, draw sine function curve.When two benchmark cylinder dwangs 4 insert centralized positioning cylinder 2-3 and cosine positioning cylinder 2-5, two cosine positioning cylinder 2-5 are connected with connecting rod 5 again, pin two cosine positioning cylinder 2-5 rotation base director circle post 2-2, will in positive and negative 360 degree, draw cosine function curve.
Claims (4)
1. a trigonometric function image demonstration device, is characterized in that: it comprises drawing board assembly (1), basic circle column assembly (2), locking plate (3), benchmark cylinder dwang (4), connecting rod (5), tangent T shape guide rail (6), cotangent T shape guide rail (7), vertical sliding bar assembly (8), odontoid belt (9), slide block cylinder (10); Two basic circle column assemblies (2) insert respectively in two holes of drawing board assembly (1), and insert locking plate (3) axial restraint; While drawing sine function image, two benchmark cylinder dwangs (4) insert respectively two basic circle column assemblies (2) end centralized positioning cylinders (2-3) and sinusoidal positioning cylinder (2-4), insert connecting rod (5) on two sinusoidal positioning cylinders (2-4) again; While drawing cosine function image, two benchmark cylinder dwangs (4) insert respectively two basic circle column assemblies (2) end centralized positioning cylinders (2-3) and cosine positioning cylinder (2-5), insert connecting rod (5) on cosine positioning cylinder (2-5) again; Two tangent T shape guide rails (6) are tangent with two basic circle column assemblies (2) cylindrical right side, parallel with the Y-axis line (1-4) of drawing board assembly (1), upper and lower two ends flush with the drawing board (1-1) of drawing board assembly (1), and with bonding connection of drawing board (1-1) of drawing board assembly (1); Two cotangent T shape guide rails (7) are tangent with two basic circle column assemblies (2) cylindrical left side, parallel with the Y-axis line (1-4) of drawing board assembly (1), upper and lower two ends flush with the drawing board (1-1) of drawing board assembly (1), and with bonding connection of drawing board (1-1) of drawing board assembly (1); In tangent T shape guide rail (6) and cotangent T shape guide rail (7), slide block cylinder (10) is set.
2. according to trigonometric function image demonstration device claimed in claim 1, it is characterized in that: described drawing board assembly (1) comprises drawing board (1-1), reference circle (1-2), X-axis line (1-3), Y-axis line (1-4); Drawing board central horizontal direction is drawn X-axis line (1-3), and a strokes and dots reference circle (1-2) is selected in X-axis line (1-3) left side, makes reference circle (1-2) and approximately one centimeter of drawing board (1-1) top, left side distance; Reference circle (1-2) right side and X-axis line (1-3) intersection point place, extended distance is all strong points of benchmark cylinder (2-2) to the right, and vertical direction is drawn Y-axis line (1-4), and this intersection point is reference point at zero point; This puts to the right extended distance is again benchmark cylinder (2-2) girth, and these two benchmark cylinder girths are picture trigonometric function image district; Reference circle (1-2) center perforate reference for installation cylindrical assembly (2), one-tenth is slidably matched; X-axis line (1-3) all strong points of two benchmark cylinders (2-2) to the right at zero point, perforate reference for installation cylindrical assembly (2), one-tenth is slidably matched.
3. according to trigonometric function image demonstration device claimed in claim 1, it is characterized in that: described two basic circle column assemblies (2) comprise basic circle stud wheel (2-1), benchmark cylinder (2-2), centralized positioning cylinder (2-3), sinusoidal positioning cylinder (2-4), cosine positioning cylinder (2-5), locking plate groove (2-6); Basic circle stud wheel (2-1), benchmark cylinder (2-2), centralized positioning cylinder (2-3), locking plate groove (2-6) are for entirety processes, and basic circle stud wheel (2-1) pitch diameter is identical with benchmark cylinder (2-2) diameter; Sinusoidal positioning cylinder (2-4), cosine positioning cylinder (2-5) are bonding connection with benchmark cylinder (2-2) end face, sinusoidal positioning cylinder (2-4), cosine positioning cylinder (2-5) are all tangent with benchmark cylinder (2-2) circumference, and both apart 90 spend; Two basic circle column assemblies (2) are basic circle stud wheel (2-1) at drawing board (1-1) rear portion, two basic circle stud wheels (2-1) are packed into and are meshed by odontoid belt (9), and two basic circle stud wheels (2-1) synchronously rotate.
4. according to trigonometric function image demonstration device claimed in claim 1, it is characterized in that: described vertical sliding bar assembly (8) comprises vertical sliding bar (8-1), connects bent plate (8-2), belt brace (8-3), pen cap slide block (8-4), paintbrush (8-5); The upper and lower two ends of vertical sliding bar (8-1) be connected the bonding connection of bent plate (8-2), and circlewise around drawing board (1-1), connecting the bonding belt brace of lower inside (8-3) after bent plate (8-2), then by bonding lower to belt brace (8-3) and odontoid belt (9) strap surface; In this twice bonding process, must meet: the one, vertical sliding bar (8-1) center line overlaps with Y-axis line (1-4), this intersection point is reference point at zero point, the 2nd, vertical sliding bar (8-1) is parallel with drawing board (1-1), and makes its outerplanar and benchmark cylinder (2-2) end face be positioned at same plane; Pen cap slide block (8-4), paintbrush (8-5) insert in the groove of connecting rod (5) and vertical sliding bar (8-1) simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310023431.5A CN103943000A (en) | 2013-01-23 | 2013-01-23 | Trigonometric function image demonstration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310023431.5A CN103943000A (en) | 2013-01-23 | 2013-01-23 | Trigonometric function image demonstration device |
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| CN103943000A true CN103943000A (en) | 2014-07-23 |
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| CN201310023431.5A Pending CN103943000A (en) | 2013-01-23 | 2013-01-23 | Trigonometric function image demonstration device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332085A (en) * | 2014-11-25 | 2015-02-04 | 南京工业职业技术学院 | Anti-tangent, cotangent, secant and cosecant function demonstrating and graph drawing instrument |
| CN106994855A (en) * | 2017-05-25 | 2017-08-01 | 钦州学院 | Plotter for drawing tangent cutve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1716340A (en) * | 2005-06-23 | 2006-01-04 | 吕锋 | Double sine line bar rod full function triangular function and plane geometry demonstrator |
| CN2842614Y (en) * | 2005-04-14 | 2006-11-29 | 吕锋 | Double sine line-rod omniphotence trigonometric function demonstrator |
| CN201002455Y (en) * | 2007-01-31 | 2008-01-09 | 赵林 | Device for calculating triangle angle |
| CN201444362U (en) * | 2009-04-28 | 2010-04-28 | 岳治奎 | Multifunctional combined set square |
| CN201522798U (en) * | 2009-09-18 | 2010-07-07 | 上海市闵行第二中学 | Triangular gauge teaching aids |
| CN201662909U (en) * | 2010-03-24 | 2010-12-01 | 杨饔 | Trigonometric function line presenter |
| CN201838225U (en) * | 2009-11-27 | 2011-05-18 | 孙玉东 | Multi-purpose ruler |
| CN203013053U (en) * | 2013-01-23 | 2013-06-19 | 张海湄 | Trigonometric function image demonstrator |
-
2013
- 2013-01-23 CN CN201310023431.5A patent/CN103943000A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2842614Y (en) * | 2005-04-14 | 2006-11-29 | 吕锋 | Double sine line-rod omniphotence trigonometric function demonstrator |
| CN1716340A (en) * | 2005-06-23 | 2006-01-04 | 吕锋 | Double sine line bar rod full function triangular function and plane geometry demonstrator |
| CN201002455Y (en) * | 2007-01-31 | 2008-01-09 | 赵林 | Device for calculating triangle angle |
| CN201444362U (en) * | 2009-04-28 | 2010-04-28 | 岳治奎 | Multifunctional combined set square |
| CN201522798U (en) * | 2009-09-18 | 2010-07-07 | 上海市闵行第二中学 | Triangular gauge teaching aids |
| CN201838225U (en) * | 2009-11-27 | 2011-05-18 | 孙玉东 | Multi-purpose ruler |
| CN201662909U (en) * | 2010-03-24 | 2010-12-01 | 杨饔 | Trigonometric function line presenter |
| CN203013053U (en) * | 2013-01-23 | 2013-06-19 | 张海湄 | Trigonometric function image demonstrator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332085A (en) * | 2014-11-25 | 2015-02-04 | 南京工业职业技术学院 | Anti-tangent, cotangent, secant and cosecant function demonstrating and graph drawing instrument |
| CN106994855A (en) * | 2017-05-25 | 2017-08-01 | 钦州学院 | Plotter for drawing tangent cutve |
| CN106994855B (en) * | 2017-05-25 | 2018-05-22 | 钦州学院 | For drawing the plotter of tangent cutve |
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Application publication date: 20140723 |