If x^2+y^2+z^2=r^2,t h e ntan^(-1)((x y)...

If `x^2+y^2+z^2=r^2,t h e ntan^(-1)((x y)/(z r))+tan^(-1)((y z)/(x r))+tan^(-1)((x z)/(y r))` is equal to `pi` (b) `pi/2` (c) 0 (d) none of these

A

`pi`

B

`pi//2`

C

0

D

None of these

Verified by Experts

The correct Answer is:

B

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