Photos 2SIN PI X COS

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2sin pi x cos. Sin(x/2-пи/6=1. Sin(2x+Pi/6). Sin(x+Pi/6)=1/2. Sin 3x Pi/6 1/2 в промежутке -2pi Pi.
Sin(x/2-пи/6=1. Sin(2x+Pi/6). Sin(x+Pi/6)=1/2. Sin 3x Pi/6 1/2 в промежутке -2pi Pi.

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