If three unit vectors bara,barb,barc " s...

If three unit vectors `bara,barb,barc " satisfy " bara+barb+barc =bar0` then the angle between `bara and barb` is

A

`(2pi)/3`

B

`(5pi)/6`

C

`pi/3`

D

`pi/6`

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The correct Answer is:

A

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