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Given |veca|=|vecb|=1 and |veca+vecb|=sq...

Given `|veca|=|vecb|=1` and `|veca+vecb|=sqrt(3)`. If `vecc` be a vector such that `vecc-veca-2vecb=3(vecaxxvecb)`, then `vecc.vecb` is equal to

A

`sqrt(55)`

B

`sqrt(51)`

C

`sqrt(43)`

D

`sqrt(37)`

Text Solution

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The correct Answer is:
A
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