The book I use in my case study is:
Stewart, J., Redlin, L., & Watson, S. (2012). Algebra and trigonometry Fourth Edition. Mason,OH: Cengage Learning.
This is a high school trigonometry text book. It is suitable for use in a college prep math course that builds upon earlier algebra learning and prepares the student for high school calculus. This book also has an online component at Cengage Learning.
Supplemental materials include:
1.) Student Solutions Manual
SBN10: 1-305-11815-4 ISBN13: 978-1-305-11815-7
Contains fully worked-out solutions to all of the odd-numbered exercises in the text, giving students a way to check their answers and ensure that they took the correct steps to arrive at an answer.
2.) Study Guide
ISBN10: 1-305-11816-2 ISBN13: 978-1-305-11816-4