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If x=r cos alpha cos beta,y=r cos alpha ...

If `x=r cos alpha cos beta,y=r cos alpha sin beta,z=r sin alpha` then `x^(2)+y^(2)+z^(2)`=

A

`r^(2)`

B

`r^(2) + z^(2)`

C

`r^(2)-z^(2)`

D

`-z^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

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