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 248
f one are the supplements ofthe sides opposite in the pther, as will appear hereafter. PROPOSITION XXIII. 592, I^rohlem^—Having a sphericaltriangle given, to draw its i^olar. Solution.—Let ABC be the given triangle * FromA as a pole, with a quadrant strike an arc, as CB,From B as a pole, with a… … Fig. 341. Thus, ABC being polar to ABC ; reciprocally, ABC is polar to ABC; thatis, A is the pole of CB, B of AC, and C of AB. For every point in AB isat a quadrants distance from C, and every point in AC is at a quadrants dis-tance from B. Hence, A is at a quadrants distance from the two points C…
Geometry · Trigonometry
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
