Question

化简：(4*tanα)/[1-(tanα)^2]

化简：(4*tanα)/[1-(tanα)^2] 要具体步骤，不要直接出答案 谢谢

Answer 1

(4*tanα)/[1-(tanα)^2]
=2(2tanα)/[1-(tanα)^2]
=2tan(α+α)
=2tan(2α)

Answer 2

(4*tanα)/(1-tan²α)
=2t(2anα)/(1-tan²α)
=2tan2α