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 419
ll great circles perpendicularto the Primitive Circle pass through its pole andinclude its axis, the eye is in all such planes, andany lines of these planes, as the semi-circumfer-ences of the great circles in which they intersectthe sphere, are projected (appear to the eye) asdiameters of the… … PROJECTION OF RIGHT ANGLED SPHERICAL TRIANGLES. 100. JProb, 1.—To project a right angled spherical triangle onthe plane of one of its sides, luhen tlic tiuo sides about the right angleare given.* Solution.—Let the angles of the tnangle be represented hy A, B, and C, ALet the sides opposite these…
Geometry · Trigonometry
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