A. [-1/2, 1]
B. [1/2, ∞)
C. [1, 2)
D. [1, ∞)
If tan θ+tan (600+θ) tan (1200+θ) =3, then θ=
If sin θ=-7/25 and is not in the first quadrant, then (7cot θ -24 tan θ) / (7cot θ+24 tan θ) =
If tan A,tan B are the roots of x2-px+q=0,the value of sin2(A+B) is
The equation cos4x-(a+2)cos2x-(a+3) =0 possesses a solution if
If 4 sin x.sin 2x.sin 4x=sin 3x then x=
If tan (πcos x) = cot (π sinx) then cos(x-π/4) =
If 6 Sec2 θ-5 Sec θ+1=0 then θ=
If cot θ - tan θ= sec θ, then θ =
If sin x-3 sin 2x+sin 3x=cos x-3cos 2x+cos 3x then x=
If cos θ+cos 2θ+ cos 3θ=0 then θ=