Images COS 2X

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Cos 2x. Cos2x=2cos^2x-1. 1-Cos2x формула. (2cos x -1)/cos x. Преобразование cos2x.
Cos2x=2cos^2x-1. 1-Cos2x формула. (2cos x -1)/cos x. Преобразование cos2x.

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