A treatise on special or elementary geometry (1877)
Olney, Edward, 1827-1887, Olney, Edward, 1827-1887. Elements of trigonometry, plane and spherical · New York : Sheldon · leaf 441
Fig, 60. compare the side opposite the given angle, as 5, with the perpendicular andthe arcs BC and CB, i. e,, with ^, a, and 180° —a. If b = p there is but OBLIQUE ANGLED TRL^GLES SOLVED BY NAPIERs RLXES. 89 one solution and the triangle is right angled, A falling at D. If b is inter-mediate in…
Geometry · Trigonometry
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