Schmall, Charles Nelson. [from old catalog] · New York, D. Van Nostrand company · leaf 82
If we putWhen Fig. 73. = m, we have y = mx + b. sin (w — 6) 0, = 90°, m = tan ^. 38. Equation of line in terms of one point (iCj, y^ and 6. T … Fig. 74. Let P (x, y) be any point on the line.PD sin 0 Then, or, CD sin (<o - ^) ■X — x^ sin (co — 6) 66 ANALYTICAL GEOMETRY 39. Equation of a line in terms of the _L on it from theorigin and the angles which this ± makes with the axes. The equation of AB is I
Geometry, Analytic
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