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Arc Length (Set up the Integral)

  1. Oct 29, 2012 #1
    x = t + cot t
    y = t - sin t
    0 ≤ t ≤ 2π

    Somehow the answer is:

    ∫sqrt(3 - 2*sin t - 2*cos t) dt

    I'm afraid I don't know where to start on this one. I don't need someone to walk me through it (probably) but a point in the right direction would be appreciated.
  2. jcsd
  3. Oct 29, 2012 #2
    Nevermind this post everyone. I made a foolish mistake. I'm supposed to do sqrt[(x')^2 + (y')^2] for anyone who makes the same mistake and comes across this in a Google search. It was in an earlie rpart of the chapter I'm working on even. Sorry everyone.
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