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Homework Help: Finding The Curvature Of A Polar Function.

  1. Mar 9, 2013 #1
    1. The problem statement, all variables and given/known data

    Find the curvature of the polar function r = 5sin(2θ).

    2. Relevant equations

    All of the usual curvature equations.

    3. The attempt at a solution

    I want to turn this into a vector value function, so I can use the normal curvature equations, but that seems worse. I am having trouble with where to start.
  2. jcsd
  3. Mar 9, 2013 #2


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    Science Advisor
    Homework Helper

    Just let θ be the parameter. So e.g. x(θ)=r*cos(θ)=5sin(2θ)*cos(θ).
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