Dowling, L. Wayland (Linnaeus Wayland), b. 1867, Turneaure, F. E. (Frederick Eugene), 1866- · New York, H. Holt and company · leaf 28
systems of coordinates incommon use; namely, cartesian coordinates, named after ReneDescartes, who first used this system (1637), and polar coordi-nates. These systems of coordinates will be explained in thesucceeding articles. 5. Cartesian coordinates. Choose two linear scales OX andOY (Fig. 6)… … sented by D and E on their respective scales are the cartesiancoordinates of P. By article 1, these coordinates express the dis-tances and directions oi Dand E from 0 in terms of theunit chosen; or the distancesand directions of P from 0 Yand OX measured along par-allels to OX and OT,…
Geometry, Analytic
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