Lesson: Trigonometric Ratios on the Unit Circle Mathematics

In this lesson, we will learn how to use the fact that the quadrant where an angle lies determines the signs of its sine, cosine, and tangent and solve trigonometric equations.

Lesson Plan

Objectives

Students will be able to

  • solve trigonometric equations by using (or visualizing) the graph of a unit circle,
  • apply knowledge of angles in standard position to determine the signs of trigonometric functions.

Prerequisites

Students should already be familiar with

  • angles in standard position,
  • reciprocal trigonometric functions,
  • radians.

Exclusions

Students will not cover

  • inverse trigonometric functions.

Lesson Video

Video Thumbnail
15:41

Lesson Explainer

Sample Question Videos

  • 03:36
  • 02:54
  • 01:22

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