if `cos^4x+sin^2x-p=0` has real solutions then

If x^2-4x+p=0 has real roots then

The equation sin^6x + cos^6x = a^2 has real solution then find the values of a

If the equation sin x(sin x + cos x)=k has real solutions then k may lie in the interval

If the equation sin x+cos(k+x)+cos(k-x)=2 has real solutions,then sin k can be(A)(1)/(4)(B)(1)/(sqrt(2))(C)(3)/(4)(D)-(3)/(4)

The range of y such that the equation in x , y cos x = sin x has a real solution is

The equation sin x(sinx+cos x) = k has real solutions, where k is a real number. Then

If sin2x cos2x cos4x=lambda has a solution then lambda lies in the interval

The range of 'y,such that the equation in X,y+cos x=sin x has a real solution is