Hi, Is (a^2 cos^2 b) + (a^2 sin^2 b) = a^2 ? I'm guessing though. Thanks for the help.
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yes.
Originally Posted by notgoodatmath Hi, Is (a^2 cos^2 b) + (a^2 sin^2 b) = a^2 ? I'm guessing though. Thanks for the help. $\displaystyle a^2\cos^2{b} +a^2\sin^2{b} = a^2$ $\displaystyle a^2(\cos^2{b} + \sin^2{b}) = a^2$ $\displaystyle a^2(1)= a^2$
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