Author: J. B. Lock

Publisher: Forgotten Books

Published: 2015-06-25

Total Pages: 226

ISBN-13: 9781330381168

Excerpt from A Treatise on Higher Trigonometry The present work is intended to complete the subject of Plane Trigonometry as far as it is usually read in Schools and in the junior Classes at the Universities. The introduction of the hyperbolic sine and cosine is an innovation which seems fully justified by their importance in other subjects, and by the simplification effected by their use in the statement of many theorems and formulæ. I wish to thank the Master of Gonville and Caius College for his valuable advice and assistance and for his permission to insert the proof given in Art. 62. The method of proof employed in Art. 47 was first suggested by Professor Adams. I shall be very grateful for any suggestions or corrections from teachers or students. 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.