Unit circle: Difference between revisions

Revision as of 20:29, 23 November 2003

Revision as of 02:22, 2 December 2003

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since <math>(x,y)</math> coordinates are obviously the same after one revolution in the circle. The notion of [[sine]] and [[cosine]], as well as several other trigonometric functions make little sense for [[triangle]]s with [[angle]]s greater than &pi;/2, or negative angles, but in the unit circle both of these have sensible, intuitive meanings.

==See also==

*[[Trigonometric function]]

*[[Angle measure]]