Решите уравнения: 1) 3 sin x = 2 cos² x
2) sin 5x cos 3x = sin 3x cos 5x
3) sin 2x cos x + 2 sin³ x =1
4) cos 2x - sin x =0
2) sin 5x cos 3x = sin 3x cos 5x
3) sin 2x cos x + 2 sin³ x =1
4) cos 2x - sin x =0
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