CPM Homework Help : PC3 Problem 8-40

Solve for $x$ if $0\le x<2\pi$ .

$4\sin^{2}\left(x\right) = 1$
Hint (a):
$\frac{1}{\sqrt{2}} = \frac{\sqrt{2}}{2}$

$3\tan^{2}\left(x\right) = 1$
Step 1 (b):
$\tan^2(x)=\frac{1}{3}$
Step 2 (b):
$\tan(x)=\pm\frac{1}{\sqrt{3}}$