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 267
C : tan bC, (28). bC is lessor greater than 90°, accordiugas the angles A and bCJj areof the same, or dillereut atlec-tion. The third angle B. Let fall the perpendicular CDfrom one of the given angles onthe opposite side AB. R : cos AC : : tan A : cot ACD,(c. 3.): therefore the angle BCDis given,… … SPHERICAL TRIGONOMETRT.TABLE continued. M7 GIVEN. SOUGHT Two sidesAC and BC, A opposite to one of thein, BC. The angle B opposite to the other given side AC. and an angle^ ^j^g ^^^^^ ACB contained by the given sides AC and BC SOLUTION. Sin BC : sin. AC :: sin A : sin B, («4.). The affection of 8 is…
Euclid's Elements · Geometry · Trigonometry
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