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Nick

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  • Cross Product help, please!?

    vectors are defined as follows:

    a = 14i -7j -3k

    b = 3i -2j +2k

    c = unit vector, perpendicular to both a & b

    Find |c.k|

    I used a cross product to get axb = -20i -37j -7k, but where do I go from here?

    Thanks!

    1 AnswerMathematics9 years ago