Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 29
e all negative angles. Thus we arrive at the conception of an angle of any magni-tude, positive or negative. 40 PLANE TRIGONOMETRY SECTION XXI FUNCTIONS OF ANY ANGLE Figs. 39-42 show the functions in a unit circle drawn foran angle A OP in each quadrant, taken in order. The tangentsto the circle… … B •\ J PyC AM ( A 0 p B Fig. 41
Trigonometry · Surveying · Navigation
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
