Relationships In A Spherical Triangle Small 320×165 Medium 640×330 Large 1024×528 Download Tiff Original 2400×1237 | (265.8 KB) Description Illustration used, with the law of sines, to find the relation between two sides of a spherical triangle and the angles opposite. Keywords analytic geometry, angle, sector, Sine, spherical triangles, trigonometric, trigonometry Galleries Spheres Source: George N. Bauer, PH.D. and W.E. Brooke, C.E., M.A. Plane And Spherical Trigonometry (Boston: D.C. Heath & Co., 1917) 128 Courtesy the private collection of Roy Winkelman