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19 May, 21:09

Prove - 1 - cos^2 x = sin^2 x

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  1. 19 May, 22:42
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    sin^2 (x) + cos^2 (x) = 1

    sin^2 (x) = 1 - cos^2 (x)

    1 - cos^2 (x) = sin^2 (x)

    - 1 - cos^2 (x) = sin^2 (x) is proven incorrect.
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