The measure of the angle between the li...

The measure of the angle between the line `overline(r)=(2,-3,1)+k(2,2,1), k inR` and the plane `2x-2y+z+7=0` is .......

A

`"cos"^(-1)(1)/(9)`

B

`"tan"^(-1)(1)/(4sqrt(5))`

C

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

D

`pi//2`

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The correct Answer is:

B

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