If cos-1 1/2 =A, then cos A = __________.
0
1/2
1
2
6/7
6/√13
√13/5
17/6
Sin-1 x + sin-1 2x = π/3, then x is
What is the value of x that satisfies the equation cos-1 x= 2 sin-1 x ?
√3/2
Sin(π/3 - sin-1 (-1/2) is equal to
1/3
1/4
If sin-1 (1-x)+ 2 sin-1 x = π/2, then x equals
{0,-1/2}
{1/2,0}
{0}
{-1,0}
The value of tan-1√3-sec-1(-2) + cosec-1(2/√3) is __________.
π/2
-π/2
If sin-1 x = y then
o ≤ y ≤ π
-π/2 ≤ y ≤ π/2
π/2 ≤ y ≤ π/2
If cos-1 x + cos-1 y = π what is the value of sin-1x + sin-1y ?
π
2π
