If sin-1 (1-x)+ 2 sin-1 x = π/2, then x equals
{0,-1/2}
{1/2,0}
{0}
{-1,0}
Sin-1 x + sin-1 2x = π/3, then x is
Let f(x)= sec-1x + tan-1x. Then f(x) is real for
x∈[-1,1]
x∈R
x∈ (-∝,-1) ∪(1, +∝)
None of these
1/x+ 1/y+1/z
xyz
xy+yz+zx
Sin-1 (-x)=
Cos x
-Sin-1 x
Sin-1 x
The value of cos-1 √3/2 is
-π/6
π/6
π/3
-π/3
tan-1√3 - cot-1 (-√3) is equal to
π
-π/2
0
2√3
The value of sin-11/2 is ____________________
π/2
π/4
-3π/4
6/7
6/√13
√13/5
17/6
