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Math Help - Factoring Identities

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    Exclamation Factoring Identities

    Factor the expression and use fundamental identities..

    cos^2xsin^2x-cos^2x
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    Quote Originally Posted by jumpman23 View Post
    Factor the expression and use fundamental identities..

    cos^2xsin^2x-cos^2x
    Factor out a \cos^2x and use the Pythagorean identity, \sin^2x+\cos^2x=1.

    Hint:
    Spoiler:
    \sin^2x-1=-\left(1-\sin^2x\right)=-\cos^2x

    Or you could just factor out -\cos^2x right from the start.
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