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Math Help - Vector question

  1. #1
    Junior Member
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    Vector question

    Let A,B and C three fixed points and M a variable point in space
    show that the vector v=MA^MB+ MB^MC+MC^MA is aqual to AB^AC
    note: all have vector on them but am using my cell phone and ^:means cross
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  2. #2
    MHF Contributor
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    Re: Vector question

    Use the last property in the section "Algebraic Properties" of the Wikipedia article about the cross product and note that AB x AC = AB x BC.
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