Sin (Sec-1 25/7) =
24/25
28/25
26/25
22/25
π/3
π/4
π/2
π/6
None of these
√2 - 1
3π/4
Zero
24 - 2π
4π -24
If Sin-1 x = π/5 for some x∈ [-1, 1] then the value of Cos-1 x is
3π/10
5π/10
7π/10
9π/10
x/2
2x
3x
x
Sin-1 (-x)=
Cos x
-Sin-1 x
Sin-1 x
Let f(x)= sec-1x + tan-1x. Then f(x) is real for
x∈[-1,1]
x∈R
x∈ (-∝,-1) ∪(1, +∝)
sin [2 cos -1 ( - 3/5 ) ] is equal to _________.
6/25
4/25
-24/25
