Question

If 2tanx/1-tan^2 x = then x can equal:?

check all that apply

x= 7pi/8 + npi

x= 5pi/8 + npi

x= 3pi/8 + npi

x= pi/8 + npi

Answer 1

\[ \tan(a+b) = \frac{\tan(a) + \tan(b)}{1 - \tan(a)*\tan(b)}\]

This formula might help, you but i cannot ... unless you complete the question.

Answer 2

this is the expansion of tan(2x)