Images TG 2SIN

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Tg 2sin. 1/1+Tg²α. 1/1+Tg2a. 2tg/1-tg2. TG A=2tg a/2 /1-tg2a/2.
1/1+Tg²α. 1/1+Tg2a. 2tg/1-tg2. TG A=2tg a/2 /1-tg2a/2.

See also