A lines makes angles `alpha , beta , gamma , delta` with the four diagonals of a cube. Then `cos^2 alpha + cos^2 beta

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Q 2136212172.     A lines makes angles `alpha , beta , gamma , delta` with the four diagonals of a

cube. Then `cos^2 alpha + cos^2 beta + cos^2 gamma + cos^2 delta` is
A

`4/3`

B

`2/3`

C

`3`

D

None of these

HINT


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

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