VectorHard
Question
If 
,
,
be three mutually perpendicular vectors of equal magnitude, then the angle between and + + is-
,, be three mutually perpendicular vectors of equal magnitude, then the angle between and + + is-Options
A.cos−1 (1/√3)
B.sin−1 (1/√3)
C.cos−1 (1/3)
D.sin−1 (1/3)
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