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  1. Related searches cos 2 x 1

    sin^2(x)+cos^2(x)=1cos^2 x - 1 = 0
    cos^2(x) = 1+cos(2x)sin^2(x)
    cos^2(x) identitycos 2x
    cosine squaredcos^2 x = 1/4
    derivative cos 2 xprove sin^2(x) + cos^2(x) = 1
    (cos^2 x - 1)/(csc^2 x - cos x)proof for sin^2(x)+cos^2(x)=1