Smith, J: Elementary Trigonometry (Classic Reprint)

Master the fundamentals of trigonometry with clear, practical guidance. This classic text teaches measurement, ratios, and the foundations of circular functions through step‑by‑step explanations and worked examples.

This edition guides readers from the measurement of lines to the relationship between circumference and diameter, and into the basics of logarithms. It emphasizes how geometric ideas connect to algebra, with numerous exercises to reinforce understanding and build problem‑solving skills.

• Learn how to measure lines and compare different units of length.


• Explore the ratio of circumference to diameter and the concept of pi.


• Understand trigonometric functions, multiple and submultiple angles, and inverse functions.


• Master the common system of logarithms and how logarithms simplify multiplication and division.