Images SIN X A COS 2X

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Sin x a cos 2x. Sin^2 x/2-cos^2 x/2=cos2x. 1 Sin2x+cos2x формула. Sin2x+cos2x 1. Sin x cos x формула.
Sin^2 x/2-cos^2 x/2=cos2x. 1 Sin2x+cos2x формула. Sin2x+cos2x 1. Sin x cos x формула.

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