Analytic geometry for colleges, universities, and technical schools (1892)
Nichols, E. W. (Edward West), 1858- · Boston [Mass.] : Leach, Shewell & Sanborn · leaf 144
e centre parallel to PT, is the conjugate diameter to RP. The equation of condition (7) being a single equation con-taining two unknown quantities (tan 9, tan (f), we mayassume any value we please for one of them, and the equationwill make known the value of the other; hence, in the ellipsethere… … Fig. 43. The equation of the tangent line PT, drawn throughV (x, y) is a^ + yy 1. By Art. 94, SchoL, the diameter PR is parallel to PT;hence its equation must be the same as that of the tangent,the constant term being zero. y = XX 1 yy a h^ h^x r;^ = 0 (1) ahf (2) is the equation of a diameter…
Geometry, Analytic
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