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Ted Sundstrom, Grand Valley State University
Steven Schlicker, Grand Valley State University

Pub Date: 2016

ISBN 13:

Publisher: Grand Valley State University

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Table of Contents

  • Note to Students 
  • Preface
  • The Trigonometric Functions 
  • Graphs of the Trigonometric Functions
  • Triangles and Vectors 
  • Trigonometric Identities and Equations 
  • Complex Numbers and Polar Coordinates 
  • Appendix A: Answers for the Progress Checks 
  • Appendix B: Answers and Hints for Selected Exercises 
  • Appendix C: Some Geometric Facts about Triangles and Parallelograms
  • Index

About the Book

This trigonometry textbook is different than other trigonometry books in that it is free to download, and the reader is expected to do more than read the book and is expected to study the material in the book by working out examples rather than just reading about them. So this book is not just about mathematical content but is also about the process of learning and doing mathematics. That is, this book is designed not to be just casually read but rather to be engaged.

Since this can be a difficult task, there are several features of the book designed to assist students in this endeavor. In particular, most sections of the book start with a beginning activity that review prior mathematical work that is necessary for the new section or introduce new concepts and definitions that will be used later in that section. Each section also contains several progress checks that are short exercises or activities designed to help readers determine if they are understanding the material. In addition, the text contains links to several interactive Geogebra applets or worksheets. These applets are usually part of a beginning activity or a progress check and are intended to be used as part of the textbook.

About the Contributors


Ted Sundstrom is a mathematics professor at Grand Valley State University in Allendale, MI.

Steven Schlicker is a mathematics professor at Grand Valley State University in Allendale, MI.