Complete Trigonometry

**Complete Trigonometry** by Webster Wells is a thorough and systematic textbook covering both plane and spherical trigonometry. Designed for advanced high school and early college students, it provides clear explanations of trigonometric functions, identities, equations, and applications. The book emphasizes both theoretical understanding and practical problem-solving, supported by numerous examples and exercises. It includes detailed treatments of angular measurement, triangle solutions, circular functions, inverse functions, and logarithmic applications. With its logical progression and rigorous yet accessible style, Wells' work was a staple in mathematics education during the late 19th and early 20th centuries, ideal for students preparing for engineering, navigation, or science.