Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
plot[x=2*(1--cos(α)),y=2*sen(α)--3,{α,-π,π}]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random