This book is a wide-ranging collection of trigonometric functions, trigonometric tables, and constants commonly used in computations and calculations. It is designed to provide quick access to the most commonly needed information for students, engineers, scientists, and others who use trigonometry in their work. The book includes tables of sines, cosines, tangents, and cotangents, as well as a variety of auxiliary tables and formulas. It also includes a discussion of the history of trigonometry and its applications in various fields. The book is a valuable resource for anyone who needs to use trigonometry in their work or studies. It is well-organized and easy to use, and it provides a wealth of information in a convenient and accessible format.

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