#math
Reshared post from +Corina Marinescu
I think if you look at this animation and think about it long enough, you'll understand:
Why circles and right-angle triangles and angles are all related
Why sine is opposite over hypotenuse and so on
Why cosine is simply sine but offset by pi/2 radiansAnimation via Mathematics Stack Exchange.
http://math.stackexchange.com/
![](https://lh5.googleusercontent.com/-Fwx4fBMqFvA/U0klmTM6sSI/AAAAAAAA3fI/EL42E0yUqjc/DSC5003.gif?imgmax=1600)
nice
So what you're trying to say is that it's all cyclical! What goes around, comes around!