Images TG 2X

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Tg 2x. TG 2x - TG X. Tg2x ctg2x. 1-Tg2x/1+tg2x. TG^2x=2.
TG 2x - TG X. Tg2x ctg2x. 1-Tg2x/1+tg2x. TG^2x=2.

See also