1/x+ 1/y+1/z
xyz
xy+yz+zx
None of these
Sin-1 (cos (sin-1x )) + cos -1 (sin (cos -1 x )) is equal to ________.
π/4
π/2
3π/4
0
π2
The value of cos -1 ( cos 5π/3 ) + sin -1 ( sin 5π/3 )
5π/3
10π/3
[0,π]
[π/2, π]
[π/4,π]
[-π,π]
sin-1(sin5π/6)=_____________
5π/6
2π/6
3π/6
π/6
-1
1
If tan -1 (a/x ) + tan -1 ( b/x ) = π/2 then x is equal to ________.
√ab
√2ab
2ab
ab
Tan ( cos -1 x ) is equal to ___________.
