isaac-bailey_60b4f787acc46
isaac-bailey_60b4f787acc46
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se fizermos tg(3x) = tg(y)....fica tg (6x) = tg(2y)... tg(2y)= 2tg(y) / 1- tg²(y)...tg(2y) =2*4 /1- 4²..... tg(2y) =8 /1-16....tg(2y) = 8 /-15.....como ... tg(2y) = tg(6x).......tg(6x) = -8 / 15 ok ?