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Excerpt from Elements of Plain and Spherical Trigonometry: Together With the Principles of Spherick Geometry, and the Several Projections of the Sphere in Plano <p>By Rule: contrived to help tire Memory, retain a tbz'ng a great while, efieciay if Praéfice make it ready and firmiliar to him 5 yet 71's, I think, much better, in order to prevent Miake: or Blem dert; or to avoid being pug led with form Dificultie}, whick eitber the Nature of. <p>About the Publisher <p>Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com <p>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.