Hey!

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

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

Thanks!

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- Sep 16th 2008, 02:49 PMSkinnerPi 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):

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

Thanks! - Sep 16th 2008, 03:48 PMKrizalid
Nothing out the extraordinary, put $\displaystyle x=\frac1n.$

- Sep 16th 2008, 04:02 PMJameson