Trigonometric functions: Difference between revisions
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Revision as of 11:27, 31 January 2013
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{ \csc x = \frac{1}{\sin x} }[/math]
