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Cross product

  1. Feb 22, 2010 #1
    1. The problem statement, all variables and given/known data
    A vector C of magnitude 9 lies along the x axis, and a vector D of magnitude 8 lies in the xy plane, 30 degrees from the x axis (see the figure).


    What is the direction of the cross product C x D?

    in the xy plane
    in the yz plane
    in the xz plane

    2. Relevant equations
    right had rule

    3. The attempt at a solution
    Is it +z and yz plane?
  2. jcsd
  3. Feb 22, 2010 #2


    Staff: Mentor

    C X D lies along the positive z axis. The z axis is in the x-z and y-z planes, but is perpendicular to the x-y plane.
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