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 143
a^ z—c z -b* W4)r a2c 2d V %d The numerical value of z will be the numerical value of cot. P; itslogarithm taken, and 10 added to the index will be logarithmic cot.in our table. The same remarks will apply to cot. v or c. Case 3. When the given point is without thepolygon. Let ABCDE be the polygon,… … DIVISION OF LANDS. 139 As before, compute the area, AEGH, subtract it from mc, the dif-ference is the difference between the triangles PGL and PHK.Draw PKL the line that divides the polygon as required. Put PH=a, PG=b, PK=x, PL=y, angle ZT=90°, angle PGEs=w, and the angle at P, designated by P. The…
Surveying · Navigation
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