Bailey, Frederick H. (Frederick Harold), 1865- · Boston, London, Ginn & Co. · leaf 73
n 0 or if, for brevity, we denotewe have sin (w — 9)sin 6 x + b;by n, sin (o) — 6)y = nx + b, (1) exactly the same form that we found for rectangular coordi-nates, but with a new meaning for the coefficient of x.As we found the equation a b (2) by using the properties of similar triangles, it is… … Fig. 31. AB shall be the line, OD being equal to p, and Z^ XODbeing a. P(x, y) shall be any point of the line. Draw PMparallel to YY, MR parallel to AB, and FN parallel to OD. Then ZNPI o) — a, OR = OM cos a = X COS a, RD= NP= MP COS ((o —a)==y COS (w —a). X COS a + y COS (co — o.) ^^ R- (3) It…
Geometry, Analytic
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