
Trigonometry: A Very Short Introduction
by Van Brummelen, Glen-
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Summary
In this Very Short Introduction Glen Van Brummelen shows how trigonometry connects mathematics to science, and has today become an indispensable tool in predicting cyclic patterns like animal populations and ocean tides. Its historical journey through major cultures such as medieval India and the Islamic World has taken it through disciplines such as geography and even religious practice. Trigonometry has also been a major player in the most startling mathematical developments of the modern world. Its interactions with the concept of infinity led to Taylor and Fourier series, some of the most practical tools of modern science. The birth of complex numbers led to a shocking union of exponential and trigonometric functions, creating the most beautiful formulas and powerful modelling tools in science. Finally, as Van Brummelen shows, trigonometry allows us to explore the strange new worlds of non-Euclidean geometries, opening up bizarre possibilities for the shape of space itself. And indeed, one of those new geometries - spherical - takes us full circle back to ancient Greek astronomers and European navigators, who first used it to chart their ways across the heavens and the earth.
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Author Biography
Glen Van Brummelen is Coordinator of mathematics at Quest University. He has served twice as President of the Canadian Society for History and Philosophy of Mathematics. His books include The Mathematics of the Heavens and the Earth: The Early History of Trigonometry (Princeton, 2009) and Heavenly Mathematics: The Forgotten Art of Spherical Trigonometry (Princeton, 2013). Van Brummelen won the Haimo Award for Distinguished Teaching in 2016, and the following year won the 3M National Teaching Fellowship, Canada's most prestigious award for educational leadership.
Table of Contents
1. Why?
2. Sines, Cosines and their Relatives
3. Building a Sine Table with Your Bare Hands: The Basic Identities
4. Identities, and More Identities
5. To Infinity...
6. ...And Beyond, to Complex Things
7. Spheres and More
Further Reading
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