A general geometry and calculus : including book I. of the general geometry, treating of loci in a plane; and an elementary course in the differential and integral calculus (1881)
Olney, Edward, 1827-1887 · New York : Sheldon and Co. · leaf 224
thart the conjugate diameter makes with the axis of x an angle of 150° 39 nearly. Hence A2B2 sin {a — a) = AB, becomes ^12^2 sinl50° 39 = 12, or AoB. = ~J^. AlsoA^^ 4- -822 = ^2 + B^ .49014 2 r z I gives A2^-i-B2~ = 2^5. These two equations will give the values of A2 and Bz- Ex. 4. In an ellipse… … SPECIAL PEOPERTIES OF THE CONIC SECTIONS. 195
Geometry, Analytic · Calculus
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