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
find the Solution.—^Pass to the polar triangle; solve it,and then pass back. 14:2, ScH.—Here, again, {135) affords a slightlymore expeditious solution. Having projected thetriangle, found and located the segments, and com-puted one angle, as B, by the methods given above, the other angles may… … Projection.—See Fig. 64. Trigonometrical Solution.—1st. To sohf tlietriangle ABD, in which the two known parts Qresituated. (a) To find p, sin p = smc sin A. log sin 70 20 20 = 9.973913-f- log sin 50° 10 10 = 9.885329 Rejecting 10 = 9.859241 = log sin p.*. p = 46° 19 01, tlie species being…
Geometry · Trigonometry
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