Hi guys,

I have 2 equations on my homework that I am not allowed to use a calculator on, and need to find the exact answer. Sorry im posting so much, I got a gigantic packet to work on.

$\displaystyle 2sin^{2}(x)+5cos(x)=4$where$\displaystyle 0 \le x\le360$

AND

$\displaystyle sin(2x)=2cos^{2}(x)$where$\displaystyle 0\le x\le 2PI$