π/2
π/3
π/4
-3π/4
The value of sin (2 sin-1 0.8) is
0.96
0.48
0.64
None of these
3 tan-1 a is equal to
The domain of sin-1(x) is
(-π, π)
[-1, 1]
(0, 2π)
(- ∞, ∞)
If tan-1 3 + tan-1 x = tan-1 8, then x =
5
1/5
5/14
14/5
The value of cos-1 (cos 5π/3) + sin-1 (sin 5π/3) is
5π/3
10π/3
0
A solution of the eqution tan-1 (1 + x) + tan-1 (1 - x) = π/2 is
x = 1
x = -1
x = 0
x = π
If x = sin-1 k, y = cos-1 k, -1 ≤ k ≤ 1, then the correct relationship is
x + y = 2
x - y = 2
x + y = π/2
x - y = π/2
If 2 tan-1 (cos x) = tan-1 (2 cosec x), then value of x is
3π/4
If sec-1 (1/x) + 2 sin-1(1) = π, then x equals
1/2
1
