solve 12cos^2X=8+13sinX between the window of -360 ¡Ü x ¡Ü 360

4 answers

change cos^2 to 1-sin^2, then arrange the terms as a quadratic, and factor.
so would it be (3sinx-1)(4sinx+4)=0?
then solve for x...
after i solve for x then that is my answer? so x=1/3,-1