Aldis, W. Steadman (William Steadman), 1839-1928 · Cambridge [Eng.] Deighton, Bell, and co.; London, G. Bell and sons · leaf 65
be oblique orrectangular. 44. To find the co-ordinates of a jyoint P referred to oneset of rectangidar axes, in terms of the co-ordinates of thesame point referred to another set of axes, also rectangidar,with the same origin. Let Ox, Oy, Oz be the old axes; Ox, Oy, Oz the new.Let x, y, z be the… … ferred to Ox, Oy, Oz\ l^, m^, n^ those of Oy, and l^, m^, n^those of Oz. Through P draw PM parallel to Oz to meet the planeOxy in M, and through M draw MN parallel to Oy to meetOx in N. Then ON = x, NM= y, MP = z. Also the projection of OP on Ox \^ x. And the projec-tions of ON, NM, MP on Ox are…
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