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The projection of the vector veca = 3 ha...

The projection of the vector `veca = 3 hati - hatj - 2 hatk ` on the vector `vecb = hati + 2 hatj - 3 hatk` is :

A

`(sqrt14)/(2)`

B

`(14)/(sqrt2)`

C

`sqrt14`

D

`7.`

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The correct Answer is:
A
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