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Sinx cosx. Решите уравнение cos2x-sin2x=cosx+sinx+1. 1 Cos x sin x sin x/2. Sin x x cos x. Sinx sin2x.
Решите уравнение cos2x-sin2x=cosx+sinx+1. 1 Cos x sin x sin x/2. Sin x x cos x. Sinx sin2x.

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