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Math Help - identity help

  1. #1
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    identity help

    please help me proove that sin^2x/(1-cosx) = 1 + cosx
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  2. #2
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    Quote Originally Posted by way123 View Post
    please help me proove that sin^2x/(1-cosx) = 1 + cosx
    sin^2(x)/[1-cos(x)] = sin^2(x)*[1+cos(x)]/[1-cos(x)][1+cos(x)]
    = sin^2(x)[1+cos(x)]/[1-cos^2(x)]
    Now 1-cos^2(x) =.......?
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