The angle between a line with direction ...

The angle between a line with direction cosines `(1)/(2),sqrt(3)/(2),0` and a plane `kx-y+3z+4=0` is `30^(@)`. Then k is

A

`(3)/(2sqrt(5))`

B

`(4)/(7sqrt(5))`

C

`-(7)/(2sqrt(3))`

D

0

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The correct Answer is:

C

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