Photos COS ПИ X

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Cos пи x. Sin(2x+Pi/3)=-1/2. Sin 3pi Pi/2. -3pi/2 Pi. (3sin(x-\Pi )-cos((\Pi )/(2)+x))/(sin(x-\Pi )).
Sin(2x+Pi/3)=-1/2. Sin 3pi Pi/2. -3pi/2 Pi. (3sin(x-\Pi )-cos((\Pi )/(2)+x))/(sin(x-\Pi )).

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