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If a, b and c are unit coplanar vectors...

If a, b and c are unit coplanar vectors, then `[[2a-b, 2b-c, 2c-a]]` is equal to

A

1

B

0

C

`-sqrt3`

D

`sqrt3`

Text Solution

Verified by Experts

The correct Answer is:
B

`because` a,b and c are coplanar vectors , so `2a-b, 2b-c` and `2c-a` are also coplanar .Thus , `[2a-b2b-c2c-a]=0` .
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