A treatise on surveying and navigation: uniting the theoretical, the practical, and the educational features of these subjects (1852)
Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst · leaf 137
proposednumber of parts, having given ratios. Case 3. By lines drawn from a given point on one of the sides ofthe triangle. 132 SURVEYING. Let ABC be the given triangle, and Pthe given point on the side AB. It is required to draw lines from P, asPD and PE, dividing the triangle intothree parts mc,… … By comparison, y=- b sin. B When mc and ^>c are cut off, nc is left. Having a and a?, the angle ADP is easily determined. In a similar manner we can divide the triangle into any proposednumber of parts, by lines drawn from the given point P.Case 4. By lines drawn from a given point within the…
Surveying · Navigation
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