Difference between revisions of "Tangent"

Revision as of 18:29, July 13, 2007

In trigonometry, the tangent is defined as a relationship between the sine and cosine functions:

$\tan \theta ={\frac {\sin \theta }{\cos \theta }}=\cot \left({\frac {\pi }{2}}-\theta \right)={\frac {1}{\cot \theta }}\,$

Lines which intersect a circle or curve at only one, unique point are said to be tangent to that circle or curve.

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-'''Tangent''' is a [[trigonometry|trigonometric]] function.
+In [[trigonometry]], the '''tangent''' is defined as a relationship between the [[sine]] and [[cosine]] functions:
 <math>\tan \theta = \frac{\sin \theta}{\cos \theta} = \cot \left(\frac{\pi}{2} - \theta \right) = \frac{1}{\cot \theta} \,</math>
+Lines which intersect a [[circle]] or [[curve]] at only one, unique point are said to be tangent to that circle or curve.
 [[Category:Mathematics]]