What is the value of sin-1 (sin 2π/3)?
-π/3
2π/3
-2π/3
π/3
sin [2 cos-1 (-3/5)] is equal to
6/25
24/25
4/5
-24/25
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 tan-1 3 + tan-1 x = tan-1 8, then x =
5
1/5
5/14
14/5
The value of sin (cot-1x) is
x
(1 + x2)-3/2
(1 + x2)-1/2
If 2 tan-1 (cos x) = tan-1 (2 cosec x), then value of x is
3π/4
π/4
None of these
If θ = sin-1 [sin (-600o)], then one of the possible values of θ is
π/2
If x + 1/x = 2, what is the principal value of sin-1 x?
30o
45o
60o
90o
The value of sin (2 sin-1 0.8) is
0.96
0.48
0.64
If tan-12, tan-13 are two angles of a triangle, then the third angle is
