Chapter 1 – Unit Circle and Definitions

Topic 1.4
The Unit Circle – Part II

The Unit Circle – Part II finishes the work begun in the Unit Circle – Part I by discussing the 30° – 60° – 90° triangle and the 45° – 45° – 90° triangle. It includes both degree and radian measure. By the end of this lesson, students should be able to find sine and cosine values for 16 angles between 0° and 360°.

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Trigonometry by Mike Weimerskirch and the University of Minnesota Board of Regents is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted.