The famous Indian mathematician Ramanujan is said to have mastered this book at a young age which contributed to his success. If you want to progress beyond the simplified way trigonometry is usually taught then you definitely will want to have this book. This book is a high quality reproduction of the original classic mathematics text from 1893. This book is composed of two parts, geometric trigonometry and analytic trigonometry. Although this book starts off with the basics, there is plenty of exciting advanced material presented: complex variables or infinite series for example. If you want to master the art of trigonometry this is one book you can't do without.
Sidney Luxton Loney
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