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Math Help - Vectors cross product

  1. #1
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    Vectors cross product

    If are vectors then show that



    Where is the angle between and

    are not coplanar.
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  2. #2
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    Quote Originally Posted by usagi_killer View Post
    If are vectors then show that



    Where is the angle between and

    are not coplanar.
    \mathbf{a}\cdot \mathbf{b} = |\mathbf{a}||\mathbf{b}|\cos{\theta}.

    Replace \mathbf{b} with \mathbf{b}\times \mathbf{c}.
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