This textbook provides a comprehensive introduction to the mathematical principles of plane trigonometry and logarithms, and is an invaluable resource for students of engineering, physics, and other technical disciplines. The author presents the material in a clear and concise manner, with numerous examples and exercises to reinforce understanding. The book also includes a brief history of the subject, tracing the evolution of trigonometry and logarithms from their earliest beginnings. This is a must-have reference work for anyone seeking a solid foundation in these essential mathematical tools.

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