Solve: sin2x cosx + cos 2x sin x = √3/2

We are given with the expression or equation s in2x cosx + cos 2x sin x = √3/2. The expression can be patterned from the trigonometric identity sin (a + b) = sin a cos B + cos A sin B. In this case, the expression is equal to sin 3x = sqrt 3 / 2. using arc sign, x is equal to pi/9