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Digitizing Trigonometry

  1. Feb 20, 2015 #1
    I'm making a model of a sine wave out of popsicle sticks. Essentially I'm digitizing a sine wave.

    Let's say I'm modeling half of a cycle with ten sticks. So I need to know how long to cut each stick. So I figured it would be cos(arcsin(x/10)) for x=0 through 9. Wrong! I still can't figure out what the problem is, so I printed out a sine wave and traced it onto the sticks. That worked, of course.
  2. jcsd
  3. Feb 20, 2015 #2


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    Science Advisor

    I don't know where you come up with such a complex formula. Try sin((pi*(n-1))/9)
  4. Feb 21, 2015 #3
    The sticks are horizontal, aligned with the X axis.
  5. Feb 21, 2015 #4


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    Staff: Mentor

    Can you post a sketch of what you are tying to do? So far the explanation is confusing (at least to me)... :smile:
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