If cos-1 x + cos-1 y = π what is the value of sin-1x + sin-1y ?
0
π/2
π
2π
If sin-1 (1-x)+ 2 sin-1 x = π/2, then x equals
{0,-1/2}
{1/2,0}
{0}
{-1,0}
Sin (Sec-1 25/7) =
24/25
28/25
26/25
22/25
If cos-1 1/2 =A, then cos A = __________.
1/2
1
2
The value of sin-1 1/2 is
-π/6
π/6
π/3
-π/3
The value of tan-1√3-sec-1(-2) + cosec-1(2/√3) is __________.
-π/2
Sin-1 4/5 + 2 tan-1 1/3 =
π/4
Sin(π/3 - sin-1 (-1/2) is equal to
1/3
1/4
-3π/4
What is the value of x that satisfies the equation cos-1 x= 2 sin-1 x ?
√3/2
