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The angle between the line vecr=( hati+2...

The angle between the line `vecr=( hati+2 hatj- hatk)+ lambda( hati- hatj+ hatk)` and the plane `vecr. (2 hati- hatj+ hatk)=4` is __

A

`"cos"^(-1) (1)/(3)`

B

`"cos"^(-1) (1)/(sqrt3)`

C

0

D

`"sin"^(-1) (1)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
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