You can put this solution on YOUR website! solve the equation
2sin^2(x -30) = cos 60 for (-180 > x > 180)
-------------------
2sin^2(x-30) = 1/2
-----
sin^2(x-30) = 1/4
sin(x-30) = 1/2 or sin(x-30) = -1/2
--------------------------
x-30 = 30
x = 60
--------------
Cheers,
Stan H.
---------