Ziwet, Alexander, 1853-1928, Hopkins, Louis Allen, joint author · New York, The Macmillan company · leaf 148
he eccentric angle of the pointP (x, y) of the ellipse. In the case of the hyperbola the eccentric angle 6 determinesthe point P(x, y) as follows (Fig. 80). Let a line through 0inclined at the angle 6 to the trans-verse axis meet the circle of radiusa about the center at A, and let thetransverse… … Fig. 79
Geometry, Analytic
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