1/x+ 1/y+1/z
xyz
xy+yz+zx
None of these
The value of tan-1√3-sec-1(-2) + cosec-1(2/√3) is ____________
0
1
π/2
-π/2
If sin-1 (1-x)+ 2 sin-1 x = π/2, then x equals
{0,-1/2}
{1/2,0}
{0}
{-1,0}
π/3
π/4
-3π/4
If cos-1 x + cos-1 y = π what is the value of sin-1x + sin-1y ?
π
2π
If cos-11/2 =A, then cos A = ___________________
1/2
2
Sin-1 x + sin-1 2x = π/3, then x is
The value of sin-11/2 is
-π/6
π/6
-π/3
What is the value of x that satisfies the equation cos-1 x= 2 sin-1 x ?
√3/2