Precalculus. Solve for x sin (2x)=0.5. sin(2x) = 0.5 sin ( 2 x) = 0.5. Take the inverse sine of both sides of the equation to extract x x from inside the sine. 2x = arcsin(0.5) 2 x = arcsin ( 0.5) Simplify the right side. Tap for more steps... 2x = π 6 2 x = π 6. Divide each term in 2x = π 6 2 x = π 6 by 2 2 and simplify. Tap for more steps...