Elements of surveying and levelling; with descriptions of the instruments and the necessary tables (1870)
Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes & Company · leaf 48
SEC. III.] PLANE TEIGONOMETEY. 45 … 64. Let A GB be a triangle: then willAB ^ AC \ AB - AC : : tan \{C + B) : tan ^{C - B), With ^ as a centre, and a radiusA C, the less of the two given sides,let the semicircumference IFCJE bedescribed, meeting AB in I, and BAproduced, in M Then, BE will bethe sum of the sides, and BI…
Surveying
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