Question

vectors p,q and r are such that |p|=|q| ,|r|=√2|p|, p+q+R=0 then what is the angle between p and q, q and r and p and r

Answer 1

Answer:

angle between vectors p and q. As p and q vectors of equal magnitude, - r will be at π/4 angle from either p and q. So r will be at 180 deg from - r

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