# Math Help - Pi formula

1. ## 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!

2. Nothing out the extraordinary, put $x=\frac1n.$

3. 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?