Trigonometry is a comprehensive textbook on the principles of trigonometry, written by two eminent mathematicians, Maxime Bocher and Harry Davis Gaylord. Covering everything from basic trigonometric functions to more advanced topics such as spherical trigonometry, it is an essential resource for students and scholars of mathematics. With its clear explanations and detailed worked examples, it is an invaluable aid to learning and understanding this important branch of mathematics.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

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