Learning Paths
Each learning path is one chapter: a guided route through a topic, one small course at a time. Pick a class to see its chapters in order.
Chapter 8
Trigonometric Ratios, Trigonometric Identities
How tall is that tree? How steep is that ramp? A right triangle holds the answer, if you know how its sides compare. In this chapter you meet the six trigonometric ratios of an angle, find their values for 0°, 30°, 45°, 60° and 90°, and prove the identities that link them, such as sin² A + cos² A = 1. Python computes the ratios and checks every identity for hundreds of angles at once.
2 courses
