Elements of geometry : containing the first six books of Euclid, with a supplement on the quadrature of the circle, and the geometry of solids : to which are added, Elements of plane and spherical geometry (1826)
Playfair, John, 1748-1819, Euclid · Philadelphia : Marot & Walter · leaf 230
SOLUTION IL Let D be the difference of the sides AB, AC. Then (Cor. y.)2 v/AB:aC : ^(BC+D) (BC—D) :: R : sin. i BAG. SOLUTION III. Let S be the sum of the sides B A and AC.2 yAB.AC : v(S+BC) (S—BC) :: R : cos. i SOLUTION IV. Then (i. Cor. 8.)BAC. S and D retaining the significations above, [2. Cor.…
Euclid's Elements · Geometry · Trigonometry
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