If sin ( sin -1 1/5 + cos -1 x ) = 1 then x is equal to __________.
1
0
4/5
1/5
If sin -1 x + sin -1 y + sin -1 z = π thenx4 + y4 + 24 + 4x2 y2z2 = k ( x2y2+ y2z2 + z2x2 ), Where k is equal to ________.
2
4
None of these
Π/4
Π/3
Π/2
The value of is
x
If tan -1 (a/x ) + tan -1 ( b/x ) = π/2 then x is equal to ________.
√ab
√2ab
2ab
ab
Sin-1 (cos (sin-1x )) + cos -1 (sin (cos -1 x )) is equal to ________.
π/4
π/2
3π/4
√3/2
-√3/2
1/2
-1/2
If a ≤ tan -1x + cot -1 x + sin -1 x ≤ b, then
a = 0, b = π
b = π/2
a = π/4
