Elements of Plane Trigonometry

First published in 1867, this classic textbook on plane trigonometry is an essential resource for any student of mathematics or engineering. With clear explanations, practical examples, and a wealth of exercises and problems, the book provides a thorough introduction to the principles of trigonometry and their applications in surveying, measurement, and more. Whether you're a high school student or a professional engineer, Elements of Plane Trigonometry is an indispensable guide to this foundational branch of mathematics.
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