1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Cylindrical Coordinates

  1. Sep 20, 2006 #1
    I'm having some trouble understanding exactly how to graph this problem using cylindrical coordinates. The coordinates they give me is r=2cos(theta)

    How do I go about beginning to determine how to graph this with only the radius?
    Last edited: Sep 20, 2006
  2. jcsd
  3. Sep 20, 2006 #2


    User Avatar
    Science Advisor

    Anywhere the angle is pi/3, r = 1, no matter what z is--the horizontal cross section is the same as you move up or down. The set of points satisfying that equation is therefore a set of vertical lines. To find the cross section (in a form that you can recognize) you could start by converting the equation to rectangular coordinates.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook