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If 1/2,1/3,n are direction cosines of a ...

If `1/2,1/3,n` are direction cosines of a line, then the value of `n` is

A

`(sqrt(23))/(6)`

B

`(23)/(6)`

C

`(2)/(3)`

D

`(3)/(2)`

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The correct Answer is:
A
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