Question
Wed February 20, 2013 By: Liyana Liyakath
 

if vectors a,b and c are such that a+b+c=0 and |a|=3,|b|=5 and |c|=7,find the angle between a and b? mam is it pi/3 or 2pi/3?

Expert Reply
Thu February 21, 2013
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