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[" If the vertors "AB=3hat i+4hat k" and "AC=5hat imath-2hat j+4hat k" are the sides of a triangle "ABC" ,the length of the "],[" median through "A" is: "],[[" (A) "sqrt(18)," (B) "sqrt(72)," (C) "sqrt(33)," (D) "sqrt(45)]]

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