About the Author
Mary Jane Sterling is also the author of Algebra I For Dummies, Algebra II For Dummies, Math Word Problems For Dummies, Business Math For Dummies, and Linear Algebra For Dummies. She taught junior high school and high school math for several years before beginning her 35-year tenure at Bradley University in Peoria, Illinois. In her current “retirement,” Mary Jane still shares mathematical excursions with those of all ages — making math a fun experience. She and her husband, Ted, are enjoying spending time with their children and grandchildren, and traveling.
Dedication
I would like to dedicate this edition of Trigonometry For Dummies to Nu Chapter of Delta Kappa Gamma, Illinois State. Working with the members of this teachers’ group for the past 25 years has allowed me to have wonderful interactions with members and participate in projects helping local schools and students. The friendships and fellowship have enriched my life immensely, just as the club’s activities have enriched the community.
Author’s Acknowledgments
I give a big and sincere thank-you to my project editor, Chrissy Guthrie, who continues to lead me through the various paths and hurdles of creating a valuable and useful mathematics book. Chrissy is always there to help me with the challenges and ease my concerns.
Thank you to my technical editor, Amy Nicklin, and copyeditor, Marylouise Wiack. As careful as I try to be, I still seem to miss one thing or another. And their suggestions in wording ...
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