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The angle between hati and line of the ...

The angle between ` hati` and line of the intersection of the planes ` vecr.( hati+2 hatj+ 3 hatk)=0 and vecr.(3 hati+3 hatj+ hatk)=0` is __

A

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

B

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

C

`cos ^(-1) (2/sqrt3)`

D

` cos ^(-1)(7/sqrt122)`

Text Solution

Verified by Experts

The correct Answer is:
D
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