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What is the value of b such that the sca...

What is the value of b such that the scalar product of the vector `hat(i) + hat(j) + hat(k)` with the unit vector parallel to the sum of the vectors `2hat(i) + 4hat(j)-5hat(k) and b hat(i) + 2hat(j) + 3hat(k)` is unity ?

A

`-2`

B

`-1`

C

0

D

1

Text Solution

Verified by Experts

The correct Answer is:
D
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