1.4 Trig Functions of Any Angle

OpenStax Precalculus 2e — Chapter 5, Sections 5.2-5.3 (extended)

Learning Objectives

  • Define trig functions for any angle using \((x, y, r)\) on the coordinate plane

  • Evaluate trig functions for angles greater than \(360^\circ\) or less than \(0^\circ\)

  • Find coterminal angles and use them to simplify evaluation

  • Determine all six trig values given one value and the quadrant

Key Concepts

To be filled during study.

Practice Problems

To be completed with textbook exercises.

Section Summary

To be written after completing the section.

Study Notes

Personal observations and connections to engineering work.