Images COS 4 X

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Cos 4 x. Sin4x=cos4x=cos2x. Sin4x cos4x sin2x-1/2. Sin4x-cos4x+2cos2x=cos2x. Sin^2 x/4 - cos^2 x/4 = sin.
Sin4x=cos4x=cos2x. Sin4x cos4x sin2x-1/2. Sin4x-cos4x+2cos2x=cos2x. Sin^2 x/4 - cos^2 x/4 = sin.

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