Legendre, A. M. (Adrien Marie), 1752-1833, Brewster, David, Sir, 1781-1868, Davies, Charles, 1798-1876 · New York, Wiley & Long · leaf 62
tw^o cases. Fiy^st. When the angle C is a rightangle, or when it is obtuse, makethe angle EDF=C; take DE=:A ;from the point E as a centre,with a radius equal to the givenside B, describe an arc cutting DFin F; draw EF : then DEF will bethe triangle required. In this first case, the side B mustbe… … Secondly, If the angle C isacute, and B greater than A, thesame construction will again ap-ply, and DEF will be the trianglerequired. But if the angle C is acute, andthe side B less than A, then thearc described from the centre E,with the radius EF=B, will cutthe side DF in two points F andG, lying…
Trigonometry · Geometry
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