Images COS2X TG

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Cos2x tg. TGX+tg2x/1-TGX tg2x. Tg²x/2=1-1/cos²x/2. 2tgx/1+TG 2x. 2tg x/(1-tg2 x).
TGX+tg2x/1-TGX tg2x. Tg²x/2=1-1/cos²x/2. 2tgx/1+TG 2x. 2tg x/(1-tg2 x).

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