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 416
8. The distances AB, AC, and BC, betweenthe points A, B, and c, are known ; viz., AB =800 yds., AC = 600 yds., and BC = 400 yds.From a fourth point P, the angles APC and BPCare measured; viz., APC = 33° 45,and BPC = 22° 30. ■Requirid the distances AP, BP, and CP. r AP = 710.193 yds. Distances,^ BP… … 64 PLANE TRIGONOMETRY. Sugs.—Conceive tlie circumference passed through A, B, and P, and AD andDB drawn. In the triangle ADB, angle DAB = the given angle DPB, and DBA— APD. Ilence, all the parts of triangle ADB can be found. Again, since thesides of the tiiangle ACB are given, its angles can be…
Geometry · Trigonometry
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