I was looking up how pi was derived, and found this:(adsbygoogle = window.adsbygoogle || []).push({});

http://mathforum.org/library/drmath/view/52589.html

Question: How were the quantities n*sin(180/n) and n*tan(180/n) found/derived?

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# The derivation of pi using limits

**Physics Forums | Science Articles, Homework Help, Discussion**