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If a=hati+2hatj+2hatk and b=3hati+6hatj+...

If `a=hati+2hatj+2hatk and b=3hati+6hatj+2hatk`, then find a vector in the direction of a and having magnitude as |b|.

A

`7 (hati+hatj+hatk)`

B

`(7)/(3) (hati+2hatj+2hatk)`

C

`(7)/(9) (hati+2hatj+2hatk)`

D

None of these

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The correct Answer is:
B
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