Question

if 2tanx/1-tan^2x=1, then x can equal____?

Answer 1

guess you can start with
\[2\tan(x)=1-\tan^2(x)\]

Answer 2

or even
\[\tan^2(x)+2\tan(x)-1=0\]

Answer 3

\[tan(2x)= \dfrac{2tanx}{1-tan^2x}=1\\2x=arctan1\\2x = \dfrac{\pi}{4}\\x =\dfrac{\pi}{8}\]

Answer 4

@mathmale can you help?

Answer 5

plz c my attachment