![know on Twitter: "If you list the first 360 digits of PI, the last 3 digits will be "360". PI comes from a circle which has 360 degrees http://t.co/rkBQCciYyG" / Twitter know on Twitter: "If you list the first 360 digits of PI, the last 3 digits will be "360". PI comes from a circle which has 360 degrees http://t.co/rkBQCciYyG" / Twitter](https://pbs.twimg.com/media/CLG3hi5WoAEygyF.jpg)
know on Twitter: "If you list the first 360 digits of PI, the last 3 digits will be "360". PI comes from a circle which has 360 degrees http://t.co/rkBQCciYyG" / Twitter
Why is the area of a sector of a circle equal to [(ϴ/360)*πr²] or [rl/2]? I just need a simple, but effective derivation on why this is so. - Quora
![Precalculus Review Calculus Preview - Cool math . com - The Unit Circle | Trigonometry, Calculus, Math Precalculus Review Calculus Preview - Cool math . com - The Unit Circle | Trigonometry, Calculus, Math](https://i.pinimg.com/736x/a5/14/8b/a5148b15b6b627dee853848276e1692e--unit-circle-radians-trigonometric-functions.jpg)