What is the value of `n`, so that the angle between the lines having direction ratios `(1, 1, 1)` and `( 1, -1, n)` is

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Q 2329167911.     What is the value of `n`, so that the angle between
the lines having direction ratios `(1, 1, 1)` and
`( 1, -1, n)` is `60^(circ)`?
NDA 2009 Paper 1
A

`sqrt(3)`

B

`sqrt(6)`

C

`3`

D

None of these

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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