This book is an elementary text in trigonometry, a branch of mathematics that explores the relationships between the sides and angles of triangles. Beginning with the most basic trigonometric functions--sine, cosine, and tangent--the author methodically builds toward more sophisticated concepts like trigonometric equations and identities. The book assumes no prior knowledge of trigonometry and is written in a clear, accessible style, making it suitable for self-study or classroom instruction. Along with ample opportunities to practice problem-solving, the author includes helpful historical notes that place trigonometry within its broader context in the development of mathematics throughout the ages. Ultimately, this book provides readers with a solid foundation in trigonometry, enabling them to continue their studies in mathematics or apply trigonometry to solve problems in other fields.

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