Difference between revisions of "Trigonometric functions"
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The well known trigonometric functions can be visualized on the circle | The well known trigonometric functions can be visualized on the circle | ||
of radius 1. See [http://en.wikipedia.org/wiki/Trigonometric_functions http://en.wikipedia.org/wiki/Trigonometric_functions] for the definitions. | of radius 1. See [http://en.wikipedia.org/wiki/Trigonometric_functions http://en.wikipedia.org/wiki/Trigonometric_functions] for the definitions. | ||
| − | * '''Tangent''': <math>\tan x = \frac{\sin x}{\cos x}</math> | + | * '''Tangent''': <math>\tan x = \frac{\sin x}{\cos x}</math> |
* '''Cotangent''': <math>\cot x = \frac{\cos x}{\sin x}</math> | * '''Cotangent''': <math>\cot x = \frac{\cos x}{\sin x}</math> | ||
| − | * '''Secant''': <math>\sec x = \frac{1}{\cos x}</math> | + | * '''Secant''': <math>\sec x = \frac{1}{\cos x}</math> |
| − | * '''Cosecant''': <math>\ | + | * '''Cosecant''': <math>\csc x = \frac{1}{\sin x}</math> |
<jsxgraph width="600" height="600" box="box"> | <jsxgraph width="600" height="600" box="box"> | ||
Revision as of 18:30, 11 June 2009
The well known trigonometric functions can be visualized on the circle of radius 1. See http://en.wikipedia.org/wiki/Trigonometric_functions for the definitions.
- Tangent: [math]\tan x = \frac{\sin x}{\cos x}[/math]
- Cotangent: [math]\cot x = \frac{\cos x}{\sin x}[/math]
- Secant: [math]\sec x = \frac{1}{\cos x}[/math]
- Cosecant: [math]\csc x = \frac{1}{\sin x}[/math]
