Plane and solid analytic geometry; an elementary textbook (1904)
Ashton, Charles Hamilton, 1866-1936 · New York, C. Scribner's Sons · leaf 192
revolve the axes through an angle 6, such that tan 2, = -^ = ^. We have decided to use the acute value of 6, which is here -• 4 To determine A! and C, we use the equations (18) and (22) or Ar+C = A + C = 10, and 4 AC = 4 AC - B2 = 96. Solving, we have A = 6 or 4, and C = 4 or G. But sincewe chose… … But this is the equation of the curve referred to axeswith origin at the point(1,1), and making an angle of - with the original axes.4 Constructing these axesand plotting the equation Gar2+ 4/= 12with respect to them, wehave the locus of the origi-nal equation, referred to theoriginal axes. 2.…
Geometry, Analytic
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