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[" 8.If "bar(d)" and "vec b" be two vect...

[" 8.If "bar(d)" and "vec b" be two vectors such that "|vec a|=sqrt(3)*|vec b|=2],[" and "bar(a)*vec b=sqrt(6)," then angle between "bar(a)" and "bar(b)is],[[" a) "(pi)/(3)," b) "(1)/(4)," c) "(2 pi)/(3)," d) "(3!)/(4)]]

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