Mathematics for engineering students, Analytical geometry and calculus (1907)
Keller, S. S. (Samuel Smith), 1867-1923, Knox, W. F., [from old catalog] joint author · New York : D. Van Nostrand company · leaf 161
ngle is found by drawing from r52 Analytical Geometry. the foot of the ordinate of a point, a tangent to the majorauxiliary circle. Then the angle formed with the axis bythe radius drawn to the point of tangency is the eccentricangle for that point. The eccentric angle is used to bestadvantage in… … Let BPC (Fig. 57) be a tangent at P, then its interceptson Ox and Oy (OB and OC), respectively, will be foundby setting successively y = o and x = o in its equation, (x, y being point P), £ 4-- =2 / X whence x = OB = 2 x and y= OC= 2/ Analytical Geometry. 153 multiplying; OB . OC = 4 x yf = a2 + b2…
Geometry, Analytic · Calculus
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