A. π/4 ≤ θ ≤π/2
B. - π/4 ≤ θ ≤0
C. 0≤ θ ≤ π/4
D. π/2 ≤ θ ≤3π/4
If cos-1 x= cot-1(4/3)+Tan-1(1/7), then x=
If sin-1 (3/5)+sin-1(5/13)= sin-1 x, then x=
Tan-1 5/6+ 1/2 Tan-1 11/60 =
The range of Sin-1 5x is
Sin (4 arc Tan-11/3) =