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Double integral, help setting up boundaries

  1. Oct 3, 2011 #1
    1. The problem statement, all variables and given/known data

    Find the area enclosed by the circles r = 1 and r = 2cos theta

    2. Relevant equations



    3. The attempt at a solution
    I thought setting bounds of the inner integral as from 2cos theta to 1 and the outer from -pi/2 to pi/2, though this doesn't seem to give me the correct answer. I have used wolfram to calculate and the answer the book gives is much different. Can someone please help me to set up the bounds? Thank you in advance.

    When using the bounds mentioned wolfram gives an answer of -pi/2, the answer in the book is (4pi - 3root3)/6
     
  2. jcsd
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