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Polar Curve Area

  1. Sep 20, 2006 #1
    Hey guys,

    I just wanted to know, if my polar curve is cos(6ǿ) and i have to find the lenght of one peddle... can i use the interval of 0 and Pi/12?

    Thanks a lot!
     
  2. jcsd
  3. Sep 20, 2006 #2

    HallsofIvy

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    One peddle? Oh! One "petal"!! cosine goes from 0 to 0 between [itex]\pi/2[/itex] and [itex]\pi/2[/tex]. [itex]6\theta= \pi/2[/itex] when [itex]\theta= \pi/12[/itex].

    I would recommend using -[itex]\pi/12[/itex] to [itex]\pi/12[/itex]. 0 to [itex]\pi/12[/itex] will only give half of a petal. Of course, if you are really clever, you could use 0 to [itex]\pi/12[/itex] and then multiply by 2.
     
    Last edited: Sep 20, 2006
  4. Sep 20, 2006 #3
    lol, sorry, i meant petal :P
    Thanks a lot
     
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