КОНТРОЛЬНЫЕ РАБОТЫ ПО АЛГЕБРЕ И НАЧАЛАМ …
б) 4 sin2x + sinx cosx – cos2x = 1 в) sin 2x + sin2x = 1 г) cos x = sin 3x д) sin 5x + sin 3x – sin 4x = 0 Решить неравенства. а) cos x ................
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