trigonometry Hal Canary 2006-06-07 18:31:58-05:00 (CDT) https://halcanary.org/vv/2006/06/07/610/ #mathematics Why do I find trigonometry so beautiful? (source) By definition, versin(A)=1-cos(A), and exsec(A)=sec(A)-1.
![[unit circle with trig functions] All of the trigonometric functions can be constructed geometrically in terms of a unit circle centered at O](https://halcanary.org/images/Circle-trig6.png)
