Schmall, Charles Nelson. [from old catalog] · New York, D. Van Nostrand company · leaf 188
/. THE ELLIPSE 171 2. The point of intersection of the tangents cos a + - sin a = 1, I at points whose a ^ cos ^ + I sin ^ = 1, I are a and ^, cos … 3. P is a point on the ellipse, eccentric angle = a. Show that the equations of AP and AP are X a y . a a - cos - + ^ sm - = cos ^, y a X . a . a ^cos2--sm^=.sm-. Suggestion. — Eccentric ^ of A is 0, of A is tt, 4. a and )3 are the eccentric angles of the extremities of a focal chord. a B e — 1…
Geometry, Analytic
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