The value of sin(cot-1x) is
x
(1 + x2)-3/2
(1 + x2)-1/2
A solution of the eqution tan-1 (1 + x) + tan-1 (1 - x) = π/2 is
x = 1
x = -1
x = 0
x = π
Sin (sin-1 1/2 + cos-1 1/2) equals
0
1
1/2
1/√2
If θ = sin-1 [sin (-600o)], then one of the possible values of θ is
π/3
π/2
2π/3
-2π/3
The value of cos-1 (cos 5π/3) + sin-1 (sin 5π/3) is
5π/3
10π/3
sin [2 cos-1 (-3/5)] is equal to
6/25
24/25
4/5
-24/25
If tan-1x + tan-1y + tan-1z = π, then x + y + z =
xyz
2xyz
If tan-1 3 + tan-1 x = tan-1 8, then x =
5
1/5
5/14
14/5
3 tan-1 a is equal to
cos-1 (cos x) = x is satisfied by
x R
x [0, π]
x [-1, 1]
None of these
