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.
Non-superficiality, combined with the author's specialised knowledge of historical material and examples not commonly found in other standard trigonometry texts, makes the book a worthwhile read for mathematical readers. * Viktor Blasjo, MathSciNet *