Number of solutions of the equation ` sin^2x+sin^2 2x -sin^2 3x - sin^2 4x =0 `lying in the interval `( 0,pi/2)]`

Number of solutions of the equation sin^(2)x+sin^(2)2x-sin^(2)3x-sin^(2)4x=0 lying in the interval (0,(pi)/(2))]

The solution of the equation sin 2x + sin 4x = 2 sin 3x is

Number of solutions of the equation 2sin^(3)x+6sin^(2)x-sin x-3=0 in (0,2 pi) are

Number of solutions of the equation sin^(4)x-cos^(2)x sin x+2sin^(2)x+sin x=0 in 0<=x<=3 pi

Find the number of solutions of the equation sin^(4)x+cos^(4)x-2sin^(2)x+(3)/(4)sin^(2)2x=0 in the interval [0,2 pi]

The number of solutions of the equation sin x . Sin 2x. Sin 3x=1 in [0,2pi] is

Number of solution of the equation sin 2x + cos 2x + sin x + cos x + 1 = 0 In the interval, (0, pi//2) is

The number of solution of the equation sin^(3)x cos x+sin^(2)x cos^(2)x+cos^(3)x sin x+1=0 in the interval [0, 2pi] is equal to

The number of real solutions of the equation 2 sin 3x + sin 7x - 3 = 0 which lie in the interval [-2pi , 2pi] is