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Drawing curves in Spherical coordinate

  1. Mar 2, 2012 #1
    I had a tutorial today and my tutor said these questions are very trivial so we can simply look at it at home.

    But after going home, I found that I don't know how to do Q 35.
    I know that p<3 is responsible for the big sphere with r=3. But I don't know why the other part is responsible for the small sphere

    attachment.php?attachmentid=44633&stc=1&d=1330694179.jpg
    attachment.php?attachmentid=44634&stc=1&d=1330694181.jpg
     

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  2. jcsd
  3. Mar 2, 2012 #2

    tiny-tim

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    hi athrun200! :smile:

    hint: draw a circle with B at the bottom, centre O, and any point P

    then BP = 2OBcosOBP :wink:
     
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