# 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> |

− | * 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 18:28, 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]\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]\sec x = \frac{1}{\sin x}[/math]