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If vec a , vec b , vec c are unit copl...

If ` vec a , vec b , vec c ` are unit coplanar vectors , then `[2veca -vecb ,2vecb -vec c ,2vec c -veca ]` is equal to : a)1 b)0 c)` -sqrt3` d)` sqrt3`

A

1

B

0

C

` -sqrt3`

D

` sqrt3`

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The correct Answer is:
B
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