Plane trigonometry, and its application to mensuration and land surveying. Accompanied with all the necessary logarithmic and trigonometric tables (1852)
Perkins, George R. (George Roberts), 1812-1876 · New York, D. Appleton · leaf 143
ddle of FH, then the lineKD will equal KI, and the two points D and D will unite withthe point I, in which case there will be but one solution. IfPH is less than PF, KD will not reach the line AB, and theproblem will be impossible. In fig. 2 there will always be one solution, and only one. ForKD,… … we should have the hypotenuse of a right-angled triangle greaterthan the sum of the two sides, which is impossible. Scholium. The solution of the following problem may be ob-tained as follows : Fig. a Through a given point Pto draw a straight line EIto cut two straight lines AB,AC, given in…
Plane trigonometry · Surveying
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
