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    Proving trigonometry identities.

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    Prove this identity.

    (cot^2 X) - (cos^2 X) = (cot^2 X)(cos^2 X)

    © BrainMass Inc. brainmass.com February 24, 2021, 2:08 pm ad1c9bdddf
    https://brainmass.com/math/trigonometry/proving-trigonometry-identities-3735

    Solution Preview

    Cot ^ 2 x = (Cos^2X/ Sin^2 X)
    <br>So Cot^2 X - Cos^2 X = (Cos^2X/ Sin ^2X)- Cos^2 X
    <br> ...

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