If `1+sin^(2)(x)/(2)=0` then find the number of solution if `x in [-pi,pi]`

find the number of solution of sin^(2) x-sin x-1=0 in [-2pi, 2pi] .

Find the number of solutions of sin^2x-sinx-1=0in[-2pi,2pi]

If log_(0.5) sin x=1-log_(0.5) cos x, then the number of solutions of x in[-2pi,2pi] is

Find the number of solutions of |cos x|=sin x , 0 le x le 4 pi

Find the number of solutions of cos x =|1+ sin x |, 0 le x le 3 pi

Find the number of solution of tan x + sec x =2 cos x in [0,2pi]

If cos(x+pi/3)+cos x=a has real solutions, then (a) number of integral values of a are 3 (b) sum of number of integral values of a is 0 (c) when a=1 , number of solutions for x in [0,2pi] are 3 (d) when a=1, number of solutions for x in [0,2pi] are 2

If cos(x+pi/3)+cos x=a has real solutions, then number of integral values of a are 3 sum of number of integral values of a is 0 when a=1 , number of solutions for x in [0,2pi] are 3 when a=1, number of solutions for x in [0,2pi] are 2

If x in [0,2pi] then the number of solution of the equation 81^(sin^2x)+81^(cos^2x)=30

Find the number of solution to the equation x^(2)tanx=1,x in [0,2pi].