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Homework Help: Vector Problem

  1. Oct 7, 2008 #1
    1. The problem statement, all variables and given/known data
    The vector u of length 6 makes an angle of 40 with the z axis; it's vector projection on the xy plane makes an angle of 44 degrees with the x axis.

    The vector projection of a second vector v on the z axis has a length 5. The vector projection of v on the xy plane has a length of 6 and makes an angle of 136 with the x axis.

    2. Relevant equations
    u = <i, j, k>
    v = <i, j, k>

    3. The attempt at a solution
    im confused on the wording of the problem but this is how I see it...

    <5cos(136), 0, 6>
  2. jcsd
  3. Oct 8, 2008 #2
    The first part confuses me, "length x makes an angle of theta with the z axis"

    What does this mean? on the zx plane? So should I take the magnitude and then take the cos of the angle?
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