Question

How do you simplify `(2tan(x+1))/(1-tan^2(x+1))`?

Answer 1

`(2tan (x+1))/(1-tan^2 (x+1)) = tan 2(x+1)`

Explanation:

`tan 2A = (2tan A)/(1-tan^2 A)`

`(2tan (x+1))/(1-tan^2 (x+1)) = tan 2(x+1)`