Subroutines for coverting between degrees, radians, and gradians; converting between different coordinate systems (cartesian, spherical, cylindrical); and great circle formulas.

I had always hated math. Now I suddenly found myself teaching trigonometry. I was an English teacher in Chicago Public Schools with certification in special education, and when my school was facing a ...

Trigonometry is the branch of math that studies triangles, with a particular focus on the relationships between angles and the lengths of corresponding sides. Interestingly enough, the trigonometric ...

Building a giant steel bale feeder is hard. Try it. Problem No. 1: Unless you live in ranch country, you probably don't even know what it's supposed to look like — regardless of whether you can build ...

You might have already passed that silly course with a title something like "Introductory Algebra and Trigonometry." It covered a bunch of stuff, but the important part was that the class was a ...