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If bara and barb are vectors such that |...

If `bara and barb` are vectors such that `|bara+barb|=sqrt(29) and baraxx(2overset(^)i+3overset(^)j+4overset(^)k)=(2overset(^)i+3overset(^)j+4overset(^)k)xxbarb,` then a possible value of `(bara+barb).(-7overset(^)i+2overset(^)j+3overset(^)k)` is

A

0

B

3

C

4

D

8

Text Solution

Verified by Experts

The correct Answer is:
C
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