Plane Trigonometry

Plane Trigonometry by Sidney Luxton Loney is a classic mathematics textbook known for its clear explanations and systematic approach. Divided into two parts, it covers fundamental trigonometric concepts, identities, equations, and applications. The book includes numerous solved examples and exercises, gradually progressing from basic to advanced levels. Widely used in India and other countries for competitive exams, it helps students build a strong conceptual foundation in trigonometry. Loney's precision and clarity make this book a timeless mathematical reference.