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
Zero
24 - 2π
4π -24
None of these
x/2
2x
3x
x
If u = xy, then ∂u/∂x =
yxy-1
u log x
u log y
xyx-1
π/3
π/4
π/2
π/6
Sin (Sec-1 25/7) =
24/25
28/25
26/25
22/25
is equal to ______.
tan -1 xy
tan-1 x/y
tan -1 y/x
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 ________.
1
2
4
-1
0
