Excerpt from Elements of Plane and Spherical Trigonometry: With Their Applications to Mensuration, Surveying, and NavigationThe Determination of Areas. Plotting a Survey To Find the Area of a Field Trigonometrical Surveys Variation of the N eedle Levelling.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.