{ "item_title" : "Short Course in Spherical Trigonometry", "item_author" : [" Pauline Sperry "], "item_description" : "Short Course in Spherical Trigonometry offers a concise and systematic introduction to the principles of spherical trigonometry and its practical applications. Written by noted mathematician Pauline Sperry, this textbook was designed to provide students with a clear understanding of the relations between the sides and angles of spherical triangles. The work meticulously covers essential theorems, formulas, and the derivation of key trigonometric identities specific to the sphere.Beyond theoretical proofs, the text emphasizes problem-solving techniques essential for fields such as astronomy, geodesy, and navigation. Through structured lessons and illustrative examples, Sperry guides the reader from fundamental concepts to more complex calculations, including the solution of right and oblique spherical triangles. This clarity of exposition makes the book an enduring resource for those seeking a foundational grasp of geometry in three-dimensional space.As a significant contribution to early 20th-century mathematical pedagogy, Short Course in Spherical Trigonometry reflects the rigorous academic standards of the era. It remains a valuable reference for students of mathematics, historians of science, and professionals in technical disciplines that rely on spherical measurements.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you may see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.", "item_img_path" : "https://covers2.booksamillion.com/covers/bam/1/02/598/260/1025982606_b.jpg", "price_data" : { "retail_price" : "15.95", "online_price" : "15.95", "our_price" : "15.95", "club_price" : "15.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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