polar plot r(t)=sqrt(((cos(3t)sin(t))'/(cos(3t)cos(t))')^2+(cos(3t)cos(t))^2)

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.