# Trigonometry

- By: Katherine Yoshiwara
- Publisher: Bruce Yoshiwara
- Source: [Open Textbook Library](https://open.umn.edu/opentextbooks/textbooks/trigonometry-2018)
- Licence: Free Documentation License (GNU)
- PDF: https://yoshiwarabooks.org/trig.html
- Online: https://yoshiwarabooks.org/trig/

This text covers the content of a standard trigonometry course, beginning with a review of facts from geometry.