This is the number one, best selling graphing-required version of Mike Sullivan"s precalculus series because, simply, "IT WORKS." Mike Sullivan, after twenty-five years of teaching, knows exactly what readers need to do to succeed and he therefore emphasizes and organizes his text around the fundamentals; preparing, practicing, and reviewing. Readers who prepare (read the book, practice their skills learned in previous math classes), practice (work the math focusing on the fundamental and important mathematical concepts), and review (study key concepts and review for quizzes and tests) succeed. This dependable text retains its best features–accuracy, precision, depth, strong reader support, and abundant exercises, while substantially updating content and pedagogy. After completing the book, readers will be prepared to handle the algebra found in subsequent courses such as finite mathematics, business mathematics, and engineering calculus. Graphs. Trigonometric Functions. Analytic Trigonometry. Applications of Trigonometric Functions. Polar Coordinates; Vectors. Analytic Geometry. Exponential and Logarithmic Functions. For all readers interested in trigonometry.