A) 3
B) 4
C) 4/3
D) 3/4
Correct Answer: C
Solution :
If a line makes angles\[\alpha ,\beta ,\gamma \]and\[\delta \]respectively with all the four diagonals of a cube, then \[co{{s}^{2}}\alpha +co{{s}^{2}}\beta +co{{s}^{2}}\gamma +co{{s}^{2}}\delta =\frac{4}{3}\] (always)You need to login to perform this action.
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