You can put this solution on YOUR website! This can be factored in terms of sin(x) as:
(2sin(x)-1)(sin(x)-2) = 0
Thus either sin(x) = 1/2 or sin(x) = 2
Clearly the 2nd solution is impossible, so the solution is all values of x for which sin(x) = 1/2
i.e. x = pi/6, (5/6)pi, ...