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Excerpt from A Short Practical Treatise on Spherical Trigonometry: Containing a Few Simple Rules, by Which the Great Difficulties to Be Encountered by the Student in This Branch of Mathematics Are Effectually Obviated Hipparchus, who flourished about two cen turies after Euclid, and one before the Christian era, is said to have laid the foundation of Spherical Trigonometry. In succeeding ages it was improved by Ptolemy, Theodosius, and others; and much is ascribed to Geber, a learned Spaniard, who lived in the sixteenth century. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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9781334013881

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