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Let a = 2hat(i) + 5hat(j) - 7hat(k), b =...

Let `a = 2hat(i) + 5hat(j) - 7hat(k), b = hat(i) + 3hat(j) - 5hat(k)`. Then `(3a - 5b).(4a xx 5b)` is equal to a)`-7` b)0 c)`-13` d)1

A

`-7`

B

0

C

`-13`

D

1

Text Solution

Verified by Experts

The correct Answer is:
B
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