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Grade: 12th pass
        
If a,b,c are three unit vectors such that a×(b×c)=(1/2)×b then b is not parallel to c , find angle between  a and b
11 months ago

Answers : (1)

Arun
21041 Points
							
Dear Ajay
 
a X (b X c) = (a.c) b – (a.b)c
 
but a.b = 0
 
hence
 
angle between a and b is 90 degree
 
Regards
Arun
11 months ago
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