it is correct!
my explaintion is:
For each point on the unit circle with y-coordinate equal to -0.73, there is a corresponding angle whose sine is -0.73. There are two such points; these are the intersections of the unit circle and the line y=-0.73, shown in red above. Therefore, there are 2 values of x with 0∘≤x<360∘ such that sinx=−0.73.
