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 51
blique axes. If the axes are oblique, we stiU have the same y -, or a, signifies the ratio of the sines of forms, but in this case X — X the angles which the line makes with the axes, since the sines of the THE EIGHT LINE IN A PLANE. 21 angles of a plane triangle are to eachother as the sides… … sm a -, and, finally, y = sm (X. y — y __ x — x ~ sm(/i—a) ^ —J, ^ — g-j^ ^^^ tion of a right line referred to oblique axes.Ex. 1. Construct the equation y = 2x -\- d. Fig. 24 -a) ■X-}- by as the equa- SoLUTioNs.—There are three methods of solution. 1st. Bp any two points. Asit is known to be an…
Geometry, Analytic · Calculus
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