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Homework Help: Curvature and angle with k direction

  1. Nov 19, 2009 #1
    1. The problem statement, all variables and given/known data
    How do I show that the curve makes a constant angle with the vertical (k) direction?

    2. Relevant equations

    3. The attempt at a solution
    I know the curvature. What else do I need to know?
  2. jcsd
  3. Nov 19, 2009 #2


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    Homework Helper

    your question is not very clear

    however for
    have a think about what you could dot product with the k unit vector to show this...
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