+ 5
App to learn trigonometry
2 Réponses
+ 13
The mathisfun website https://www.mathsisfun.com/algebra/trigonometry-index.html is a good primer. Coursera also has a trig course, and there is a great short book I've referred to many times - Precalculus Mathematics in a Nutshell by George Simmons.
+ 4
khan academy