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 443
Fig. 62. … find i{s — s). Then half the sum of the segments+ half the difference gives the greater segment, andhalf the sum — half the difference gives the less.Determine from the signs of the terms whether s isgreater or less than s : and also determine whetherthe perpendicular lies wiUiin or without the…
Geometry · Trigonometry
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