Photos Y 12 COS X

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Y 12 cos x. Решите уравнение 2sin^2x+sinxcosx-3cos^2x=0.. Sin 2 x−sinxcosx−20cos 2 x=0. Cos12x=0. 3 Sin 2 x 13 sin x cos x +12 cos 2x =0.
Решите уравнение 2sin^2x+sinxcosx-3cos^2x=0.. Sin 2 x−sinxcosx−20cos 2 x=0. Cos12x=0. 3 Sin 2 x 13 sin x cos x +12 cos 2x =0.

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