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For any vector veca |veca xx hati|^(...

For any vector ` veca`
` |veca xx hati|^(2) + |veca xx hatj|^(2) + |veca xx hatk|^(2) ` is equal to

A

`a^(-2)`

B

`3a^(-2)`

C

`4a^(-2)`

D

`2a^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
D
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