Images TG 2 A B

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Tg 2 a b. Tg2a 1-tg2a/1+tg2a sin2a. 1+Tg2a 1/cos2a. 2tg/1-tg2. 2cos2a(1+tg2a) /1-tg2a=2.
Tg2a 1-tg2a/1+tg2a sin2a. 1+Tg2a 1/cos2a. 2tg/1-tg2. 2cos2a(1+tg2a) /1-tg2a=2.

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