(sin^2(a)+2cos(a)-1)/(2+cos(a)-cos^2(a)) simplify it please
Last edited by mr fantastic; Dec 8th 2011 at 01:41 AM. Reason: Title.
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Originally Posted by ahmedb (sin^2(a)+2cos(a)-1)/(2+cos(a)-cos^2(a)) simplify it please Start by using $\displaystyle \displaystyle \begin{align*} \sin^2{a} \equiv 1 - \cos^2{a} \end{align*} $ to convert it to something only in terms of cosines.
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