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Mathematics
The angle between two diagonals of a cube is
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Q. The angle between two diagonals of a cube is
COMEDK
COMEDK 2014
A
30$\circ$
20%
B
45$\circ$
40%
C
$cos ^{-1} (\frac {1}{3})$
20%
D
$cos ^{-1} (\frac {1}{\sqrt{3}})$
20%
Solution:
Correct answer is (c) $cos ^{-1} (\frac {1}{3})$