solve for x , -180<x<180
2cos x+1= sin x
This is what i did ..
sin x -2 cos x=1
so x-63.43=26.57
x=90
and x-63.43=-26.57 , -153.43
x=36.86 , -90
My answers are in red . But tat doesn't agree with the answer in the book . Thanks for helping .