Pi formula

**Skinner** · September 16th 2008, 02:49 PM

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!

**Krizalid** · September 16th 2008, 03:48 PM

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

**Jameson** · September 16th 2008, 04:02 PM

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?

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