Analytic geometry for colleges, universities, and technical schools (1892)
Nichols, E. W. (Edward West), 1858- · Boston [Mass.] : Leach, Shewell & Sanborn · leaf 225
es an infinitenumber of revolutions about the pole. Since 0 = 2 tt gives r = 2 ir c, OA (= 2 tt c) is the radius ofthe measuring circle. 45° TT 4 90° _27r4 135° _37r 4 180° = TT 225° 5x4 270° _67r 7 _ 315° / TT 4 360° = 277- 00 210 PLANE ANALYTIC GEOMETRY. 162. The Hyperbolic Spiral. This curve is… … Fig. 71.To construct the spiral. Giving values to 6, finding the corresponding values of r,we have Values of 6 Corresponding Values of r 0 45° = - 00 n HIGHER PLANP CURVES. 211 Values of 6 Corresponding Values of r 90° = ? TT 4 a 2c TT 135°=^7r 4 ti 4c 3 TT 180° = TT u c IT 225° = ^ TT4 u Ac57r…
Geometry, Analytic
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