Download or read book Trigonometry Success in 20 Minutes a Day written by Christopher Thomas and published by Learning Express (NY). This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Teaches the essential trigonometry skills needed for school or Advanced Placement tests. Concepts range from vectors and the unit circle to Law of Sines and Cosines, inverse trigonometric functions and Heron's formula. Exercises in test format allow students to sharpen their test-taking skills.