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The angle between the vectors veca=hati-...

The angle between the vectors `veca=hati-2hatj+3hatk and vecb=3hati-2hatj-hatk` is

A

`cos^(-1)""(2)/(7)`

B

`cos^(-1)""(5)/(7)`

C

`cos^(-1)""(6)/(7)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
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