# Pi formula

• September 16th 2008, 03:49 PM
Skinner
Pi formula
Hey!

I found this formula for pi, it's probably been found, but I want to share anyway (It was fun to get this):

$\pi = \lim_{n\rightarrow \infty} \frac{nsin(\frac{360}{n})}{2}$

Thanks!
• September 16th 2008, 04:48 PM
Krizalid
Nothing out the extraordinary, put $x=\frac1n.$
• September 16th 2008, 05:02 PM
Jameson
Quote:

Originally Posted by Skinner
Hey!

I found this formula for pi, it's probably been found, but I want to share anyway (It was fun to get this):

$\pi = \lim_{n\rightarrow \infty} \frac{nsin(\frac{360}{n})}{2}$

Thanks!

Did you derive that? How did you approach it?