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The vectors lamda hati + hatj + 2 hatk, ...

The vectors `lamda hati + hatj + 2 hatk, hati + lamda hatj - hatk and 2 hati - hatj + lamda hatk` are coplanar if :

A

`lamda =-2`

B

` lamda =2`

C

`lamda =1`

D

`lamda =-1.`

Text Solution

Verified by Experts

The correct Answer is:
A
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