# Finding The Curvature Of A Polar Function.

1. Mar 9, 2013

### Baumer8993

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. Mar 9, 2013

### Dick

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