Cos-1 (cos 7π/6) is equal to
7π/6
5π/6
π/3
π/6
Sin (sin-1 1/2 + cos-1 1/2) equals
0
1
1/2
1/√2
The value of sin(cot-1x) is
x
(1 + x2)-3/2
(1 + x2)-1/2
The value of sin (2 sin-1 0.8) is
0.96
0.48
0.64
None of these
Tha value of cot-121 + cot-113 + cot-1(-8) is
cot-126
cot-11
Cost-1(1/2) + 2 sin-1(1/2) is equal
π/4
2π/3
3 tan-1 a is equal to
If sin-1x = π/5, then cos-1x equals
π/10
3π/10
5π/4
7π/4
If 2 tan-1 (cos x) = tan-1 (2 cosec x), then value of x is
3π/4
The principal of value of sin-1(sin 3π/4) is
-π/4
