# Math Help - cot^(2)x??

1. ## cot^(2)x??

Ok, so I have this math question that asks find the values of x in radian in the interval [0,2pi] such that 3cot^(2)x=1, and im getting stuck, but this is what I have so far..

cot^(2)x=1/3
cos^(2)x/sin^(2)x=1/3
and now how do i get rid of the squared?

2. $3\cot^2x=1\implies\frac1{\tan^2x}=\frac13\implies\ frac1{\tan x}=\pm\frac1{\sqrt3}$

Find $\arctan$ of something