Woods, Frederick S. (Frederick Shenstone), 1864-, Bailey, Frederick H. (Frederick Harold), 1865- · Boston, New York [etc.] Ginn and Company · leaf 124
, the pa-rameter frequently represents time. In this ease the curve of equa-tions (1) represents the pathof a moving point, the positionof the point at any instantbeing given by the equations.Any of the above examplesmay be interpreted in thisway. Other illustrations willbe found in the examples… … 108 I.»A1; A M ETRIC REPRESENTATION 53. The circle. Let P(x, y) (fig. 91) be any point on a circlewith its center at the origin 0 and its radius equal to a. Let </>be the angle made by OP and OX. Then, from the definition ofthe sine and cosine, x = a cos cj>, y = a sin c/>, are the…
Geometry, Analytic · Calculus
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