Elements of analytical geometry and of the differential and integral calculus (1866)
Davies, Charles, 1798-1876 · New York, Barnes & Co. · leaf 202
BOOK YI.] SUKFACE OP THE CONE. 201 … 45. Let the surface of this cone be now intersected bya piano, passing through the axisof Y, and consequently perpen-dicular to the co-ordinate planeZJC. Designate by it, the angleDAJC, which the secant planemakes with the co-ordinate planeyX. The equation of thisplane will be the same as thatof…
Geometry, Analytic · Calculus
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