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Let the vectors vec a and vec b be such ...

Let the vectors `vec a` and `vec b` be such that `|vec a| = 3` and `|vec b| = sqrt2/3`, then `vec a xx vec b` is a unit vector, if the angle between `vec a` and `vec b` is

A

`pi/6`

B

`pi/4`

C

`pi/3`

D

`pi/2`

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The correct Answer is:
B
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