The number of distinct solutions of `cosec^4 theta = 4+cot^4theta` in the interval `[0, 2pi`] is

The solution set of (5+4 cos theta) (2 cos theta + 1) =0 in the interval [0, 2pi] is

The solution set of (5+4cos theta)(2cos theta+1)=0 in the interval [0,2 pi] is

The solution set of (5 + 4 cos theta)(2 cos theta + 1) = 0 in the interval [0, 2 pi ] is

The solution set of (5+4 "cos" theta) (2 "cos" theta +1) =0 in the interval [0, 2pi]

The solution set of (5+4 "cos" theta) (2 "cos" theta +1) =0 in the interval [0, 2pi]

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 solution of sec^(2) theta + cosec^(2) theta+2 cosec^(2) theta=8, 0 le theta le pi//2 is

The number of solution of sec^(2) theta + cosec^(2) theta+2 cosec^(2) theta=8, 0 le theta le pi//2 is

The number of solution of sec^(2) theta + cosec^(2) theta+2 cosec^(2) theta=8, 0 le theta le pi//2 is