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>


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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]