The number of solutions of equations `3cos2theta+5costheta =1` in `[0,2pi]` is

The number of solutions of equation 3cos2 theta+5cos theta=1 in [0,2 pi] is

Number of solutions of the equation tantheta+sectheta=2costheta in [0,2pi] is

The number of solutions the equation cos (theta). cos (pi theta)= 1 has

Number of solution of the equation tan theta+sec theta=2cos theta in[0,2 pi] is

The number of solutions of the equation sin 2 theta-2 cos theta +4 sin theta=4 in [0, 5pi] is equal to

The number of solutions of the equation sin 2 theta-2 cos theta +4 sin theta=4 in [0, 5pi] is equal to

The number of solutions of the equation sin 2 theta-2 cos theta +4 sin theta=4 in [0, 5pi] is equal to

The number of solution of the equation sin theta cos theta cos 2 theta .cos 4theta =1/2 in the interval [0,pi]

The number of solution of the equation sin theta cos theta cos 2 theta .cos 4theta =1/2 in the interval [0,pi]

The number of solutions of the pair of equations 2sin^2 theta - cos(2 theta)=0,2cos^2 theta-3sin theta=0 in the interval [0,2pi] is