Is this a trig equation

Trigonomic equation + 1 / sin ( 5 x) cos ( 8x ) - cos ( 5x ) sin (8X ) = - 0. 1 2 * = sin ( 5 x - 8x ) = sin (- 3x ) 3 sin ( - 3x ) = - 0.1 + take inverse sin = 3 x = arcsin ( 0 1 ) X = . 10 0 1 6 7 42 - 2.03 3 2 Trigonomic Expressions