Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry by Michael Sullivan focuses on the fundamentals of precalculus education. The third edition emphasizes preparation for class, practice with homework, and key concept review. This series introduces functions early and maintains a continuous theme throughout the text, ensuring students master essential skills and develop the necessary conceptual understanding for their future math courses.

Containing 1200 pages, this comprehensive book is ideal for students looking to build a strong foundation in precalculus. The approach taken by the Sullivans ensures that learners are well-prepared not only for their current course but also for advanced mathematical studies. This edition was published on December 24, 2013, by Pearson and has the ISBN-13 of 978-0321931047.