Photos IV COS

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Iv cos. Cos ^4 x + sin ^4 x формула. Sin4x cos4x cos4x. Sin(x)/(4))(sin(x)/(4)+cos(x)/(4))=0. Cos x=0 sin x=4.
Cos ^4 x + sin ^4 x формула. Sin4x cos4x cos4x. Sin(x)/(4))(sin(x)/(4)+cos(x)/(4))=0. Cos x=0 sin x=4.

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