CN2560013Y - Simple trigonometric function plate - Google Patents
Simple trigonometric function plate Download PDFInfo
- Publication number
- CN2560013Y CN2560013Y CN 02275842 CN02275842U CN2560013Y CN 2560013 Y CN2560013 Y CN 2560013Y CN 02275842 CN02275842 CN 02275842 CN 02275842 U CN02275842 U CN 02275842U CN 2560013 Y CN2560013 Y CN 2560013Y
- Authority
- CN
- China
- Prior art keywords
- trigonometric function
- plate
- angle
- utility
- base plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a simple trigonometric function plate, which consists of a bottom plate and a clock hand which is movably connected with the bottom plate; wherein, the bottom plate is provided with angle index and the corresponding trigonometric function index. Using the trigonometric functions plate can not only measure angle but also find out the required trigonometric function value without searching table. The utility model can be taken as protractor and ruler, and has the advantages of convenient using, simple structure, easy production and multifunctional performance.
Description
Technical field
The utility model relates to a kind of simple and easy trigonometric function plate.
Background technology
Existing set square, protractor, ruler etc. are to the survey instrument of length, angle, and general utility functions are single, can only length as ruler, and protractor can only measuring angle, calculate the trigonometric function value of an angle, need look into corresponding table of trigonometric function, very inconvenient.
Summary of the invention
The purpose of this utility model provides a kind of simple and easy trigonometric function plate.Use this trigonometric function plate, can when measuring angle, find its required trigonometric function value, need not table look-up in addition, also can make protractor, ruler usefulness, very easy to use, and simple in structure, make easily, but one-object-many-purposes.
The purpose of this utility model is achieved in that by base plate and is movably connected on the simple and easy trigonometric function plate that the pointer on the base plate is formed that angle index and corresponding trigonometric function value scale thereof are arranged on base plate.
This simple and easy trigonometric function plate, the part of described pointer indicator function has constant slope.
The utility model is owing to be to flexibly connect rotatable pointer on fan-shaped base plate, angle index and corresponding trigonometric function value scale thereof are arranged on base plate, thereby can be when finding angle root a tree name pointer indication find each trigonometric function value of its correspondence, very easy to use, angle index is arranged on it, thereby also can do protractor usefulness, also can work as ruler, one-object-many-purposes.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Structure of the present utility model is not limited to shown in the accompanying drawing.
Embodiment
Among Fig. 1, transparent base plate 1 is a quadrant shape, be fixed with rotatable transparent pointer 2 by rivet 3 near circle centre position on it, the garden arcuation indicates angle index, indicates the functional value corresponding with angle near in the zone of circular arc, its side indicates each function near being in the zone in the center of circle on base plate 1.The part of pointer 2 indicator functions has constant slope.During use, elder generation's rotary indicator 2, make the coboundary alignment angles value of the close axial portions of pointer 2, see that again which trigonometric function what will look into is, along pointer 2 indications, look for this trigonometric function, along laterally find in the lattice at this trigonometric function place pointer 2 near the coboundary of circular arc portions the i.e. trigonometric function value of this angle of right value, but with method in contrast to this also root a tree name functional value find corresponding angle value.Also but it uses as protractor the angle index on the root a tree name base plate 1.
Claims (2)
1, a kind of simple and easy trigonometric function plate is characterized in that: be made up of base plate (1) and the pointer (2) that is movably connected on the base plate (1), angle index and corresponding trigonometric function value scale thereof are arranged on base plate (1).
2, simple and easy trigonometric function plate as claimed in claim 1 is characterized in that: the part of described pointer (2) indicator function has constant slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275842 CN2560013Y (en) | 2002-07-22 | 2002-07-22 | Simple trigonometric function plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275842 CN2560013Y (en) | 2002-07-22 | 2002-07-22 | Simple trigonometric function plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2560013Y true CN2560013Y (en) | 2003-07-09 |
Family
ID=33739802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02275842 Expired - Fee Related CN2560013Y (en) | 2002-07-22 | 2002-07-22 | Simple trigonometric function plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2560013Y (en) |
-
2002
- 2002-07-22 CN CN 02275842 patent/CN2560013Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |