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If veca,vecbandvecc are unit vectors suc...

If `veca,vecbandvecc` are unit vectors such that `veca+vecb+vecc=0`, then the value of `veca.vecb+vecb.vecc+vecc.veca` is

A

1

B

3

C

`-3/2`

D

None of these

Text Solution

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The correct Answer is:
C
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