Trigonometric functions: Difference between revisions
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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> | ||
* Secant <math>\sec x = \frac{1}{\cos x}</math> | * '''Cotangent''': <math>\cot x = \frac{\cos x}{\sin x}</math> | ||
* '''Secant''': <math>\sec x = \frac{1}{\cos x}</math> | |||
* '''Cosecant''': <math>\sec x = \frac{1}{\sin x}</math> | |||
<jsxgraph width="600" height="600" box="box"> | <jsxgraph width="600" height="600" box="box"> | ||
Revision as of 16:28, 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]\displaystyle{ \tan x = \frac{\sin x}{\cos x} }[/math]
- Cotangent: [math]\displaystyle{ \cot x = \frac{\cos x}{\sin x} }[/math]
- Secant: [math]\displaystyle{ \sec x = \frac{1}{\cos x} }[/math]
- Cosecant: [math]\displaystyle{ \sec x = \frac{1}{\sin x} }[/math]
