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 238
sing through A. This will be the perpendicular required. In a similar manner we may let fall a perpendicular from any point in thesurface, upon any arc of a great circle. To let fall a perpendicular from P uponthe arc CAB, from P as a pole, with a quadrant describe an arc cutting CAB,as at P. Then… … PROPOSITION IX. 5GS, Problem*—To pass the circumference of a small circlethrough any three points on the surface of a sjyhere. Solution.—Let A, B, and C be the three points in the surface of the spherethrough which we propose to pass the circumference ofa circle. Pass arcs of great circles through…
Geometry · Trigonometry
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