Images COS 2X

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Cos 2x. 2 Sin x cos x. Sin2x+2cos2x+cos2x. Cos2x + sin2x+ 1. Чему равен cos2x.
2 Sin x cos x. Sin2x+2cos2x+cos2x. Cos2x + sin2x+ 1. Чему равен cos2x.

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