A) \[\frac{\pi }{3}\]
B) \[{{\cos }^{-1}}\left( \frac{1}{3} \right)\]
C) \[{{\cos }^{-1}}\left( \frac{1}{\sqrt{3}} \right)\]
D) None of these
Correct Answer: B
Solution :
Let the side of a cube be unit, diagonals of a cube are \[AL\] and\[OP\].You need to login to perform this action.
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