Elements of Analytic Trigonometry; Plane and Spherical


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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1826 Excerpt: ...to calculate, may be reduced to an easy form for logarithmic calculation, in two different ways. These will be obvious, when we consider that the formulae Q, No. 4 and 3, give two different values for cosine B, the one in the sine, the other in the cosine, of the half angle. Taking, then, in the first place: cos B =1-2 ...

Elements of Analytic Trigonometry: Plane and Spherical (1826) 2010, Kessinger Publishing

ISBN-13: 9781164718277