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Law of Tangents

Revision as of 15:52, 7 October 2007 by Temperal (talk | contribs) (expand)

This article is a stub. Help us out by expanding it. The Law of Tangents states that for any $a$ and $b$ such that $\tan a,\tan b \subset \mathbb{R}$, $\frac{a-b}{a+b}=\frac{\tan(a-b)}{\tan(a+b)}$


See also

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