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Heavenly Mathematics: The Forgotten Art of Spherical Trigonometry

<p>"<i>Heavenly Mathematics</i>is heavenly, is mathematics, and is so much more: history, astronomy, geography, and navigation, replete with historical illustrations, elegant diagrams, and charming anecdotes. I haven't followed mathematical proofs with such delight in decades. If, as the author laments, spherical trigonometry was in danger of extinction, this book will give it a long-lasting reprieve."<b>--David J. Helfand, president of the American Astronomical Society</b></p><p>"This beautifully written book on an unusual topic, with its wealth of historical information about astronomy, navigation, and mathematics, is greatly to be welcomed."<b>--Robin Wilson, president of the British Society for the History of Mathematics, author of <i>Four Colors Suffice: How the Map Problem Was Solved</i></b></p><p>"Written by the leading expert on the subject, this engaging book provides an in-depth historical introduction to spherical trigonometry. <i>Heavenly Mathematics</i> breathes new and in

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{Heavenly Mathematics: The Forgotten Art of Spherical Trigonometry

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