If a line makes the angles `alpha , beta ` and `gamma` with the axes, then what is the value of `1 + cos 2 alpha +

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Q 2389745617.     If a line makes the angles `alpha , beta ` and `gamma` with the axes,
then what is the value of

`1 + cos 2 alpha + cos 2 beta + cos 2 gamma ?`
NDA 2012 Paper 1
A

`-1`

B

`0`

C

`1`

D

`2`

HINT


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

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