Cosine of the angle between two diagonals of a cube is equal to :

Question Asked by a Student from EXXAMM.com Team

Q 2513580449.     Cosine of the angle between two diagonals of a cube is equal to :
UPSEE 2013
A

2/sqrt6

B

1/3

C

1/2

D

None of these

HINT

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

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