Analytic geometry and principles of algebra (1913)
Ziwet, Alexander, 1853-1928, Hopkins, Louis Allen, joint author, Hedrick, E. R. (Earle Raymond), 1876-1943 · New York, The Macmillan Company · leaf 365
nate trihedral Oxyz to anotherOzyz, with the same origin 0, wemust find expressions for the old co-ordinates X, y, z of any point P in termsof the neio coordinates x, y, z. Wehere confine ourselves to the case wheneach trihedral is trirectangular; this isthe case of orthogonal transformation^or… … Fig. 150This is indicated by XVIJ 389] QUADRIC SURFACES 353 x y z X h h h if rill lit 2 Ills z h II2 n-.i which shows at the same time that tiieii the direction cosines of the oldaxis Ox with respect to the new axes Ox. Oy. Oz are /i, Zo, /g, etc. 388. The nine direction cosines /i. /o, ••• n^ are…
Geometry, Analytic
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