For courses in trigonometry. \”Your world is profoundly mathematical.\” Bob Blitzer continues to support and inspire students with his engaging approach, making Trigonometry beloved year after year by students and instructors alike. Blitzer\’s unique background in mathematics and behavioral science informs a wide range of applications, drawn from pop culture and up-to-date references, that appeal to students of all majors and connect math to students\’ lives. In the 3rd Edition, relevant new applications topics include World Tiger Population, COVID-19 Pandemic, Area Burned by Wildfires in the U.S., Use of Social Media by Age and more.