# Polar Curve Area

1. Sep 20, 2006

### gr3g1

Hey guys,

I just wanted to know, if my polar curve is cos(6ǿ) and i have to find the lenght of one peddle... can i use the interval of 0 and Pi/12?

Thanks a lot!

2. Sep 20, 2006

### HallsofIvy

Staff Emeritus
One peddle? Oh! One "petal"!! cosine goes from 0 to 0 between $\pi/2$ and $\pi/2[/tex]. [itex]6\theta= \pi/2$ when $\theta= \pi/12$.

I would recommend using -$\pi/12$ to $\pi/12$. 0 to $\pi/12$ will only give half of a petal. Of course, if you are really clever, you could use 0 to $\pi/12$ and then multiply by 2.

Last edited: Sep 20, 2006
3. Sep 20, 2006

### gr3g1

lol, sorry, i meant petal :P
Thanks a lot