I have two trig equations that i just can seem to get. Question is " Solve the trig equations on the given intervals. State any restrictions and give exact answers when posible or round to two

decimals." First one is:

$\displaystyle cosx=cscxtanx$

and the interval is $\displaystyle -\pi\leq x\leq \pi$

second problem is:

$\displaystyle \frac{2tan2x}{1-tan^22x}=\frac{tanx-tan3x}{1+tanxtan3x}$

and the interval is $\displaystyle 0\leq x\leq \frac{3\pi}{2}$