The Sullivan Trigonometry A Unit Circle Approach A La Carte Edition 10th Edition is a textbook by Michael Sullivan, focusing on the subject area of Mathematics, specifically in the field of Pre-Calculus. Published by Pearson Education in 2015, this textbook offers a unique approach to teaching Trigonometry through the unit circle. With 752 pages, this ringbound textbook provides a comprehensive and informative resource for students looking to deepen their understanding of this essential math concept.