Number of values of x in the interval `[0, 3pi]` satisfying the equation `2 sin^(2)x + 5 sin x - 3 = 0` is

The number of values of x in the interval [0, 5pi] satisfying the equation 3 sin^(2)x - 7 sin x + 2 = 0 is

The number of values of x in the interval [0,3 pi] satisfying the equation 2sin^(2)x+5sin x-3=0 is

Find the number of values of x in the internal [ 0, 5 pi] satisfying the equation 3 sin^(2) x - 7 sin x + 2 = 0

The number of values of x in the interval [0, 3pi] satisfying the equation 3sin^(2)x-7sinx+2=0 is