Images CTG П

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Ctg п. CTG X = sin x / cos x. 4ctg2x+CTG 2 2x-5 0. 4ctg*cos3x=1/4 -cos4x-sin3x.
CTG X = sin x / cos x. 4ctg2x+CTG 2 2x-5 0. 4ctg*cos3x=1/4 -cos4x-sin3x.

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