Images COS2X TG

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Cos2x tg. TG 2x - TG X. 2tg x/(1-tg2 x). Tg2x ctg2x. 1-Tg2x/1+tg2x.
TG 2x - TG X. 2tg x/(1-tg2 x). Tg2x ctg2x. 1-Tg2x/1+tg2x.

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