Analytic geometry, for technical schools and colleges (1897)
Lambert, Preston Albert, 1862-1925 · New York, Macmillan · leaf 96
ROPERTIES OF THE STRAIGHT LINE AuT. 43, — Equations of the Straight Line The various conditions determining a straight line give riseto different forms of the equation of a straight line. I. The equation of the straight line determined by tlie twol.oints (x, ?/), (x, y). The similarity of the… … ^(x — o:). In rec- Fio. 77. tan a, where « IS the an,<rl( the line y -?/ _x — x makes with the X-axis. In oblique coordinate!sin a -, where /3 is the angle between the axes, ax — x sin (/3 — a) the angle the line makes with the X-axis. II. The equation of a straight line through a given point(x,…
Geometry, Analytic
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