[" If "|vec a|=2,|vec b|=7" and "vec a t...

[" If "|vec a|=2,|vec b|=7" and "vec a timesvec b=3hat imath+2hat jmath+6k^(2)" ,,"],[" the angle between "vec a" and "vec b" is "],[[" (a) "(pi)/(3)," (b) "(pi)/(6)" (c) "0," (of) None of these "]]

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