Trigonometric Functions: Trigonometric Values in All Four Quadrants

section objectives icon Section Objectives

After you have completed this section, you will be able to:

  1. Identify and name values of three trig ratios of all basic angles in the first quadrant of the unit circle.
  2. Relate the values in Quadrant 1 of the unit circle to angles in quadrants II-IV.

Study Guide icon Study Guide

Before you begin this section, download and print this section's study guide. Use this study guide to take notes as you work through this section.