Analytic geometry, for technical schools and colleges (1897)
Lambert, Preston Albert, 1862-1925 · New York, Macmillan · leaf 76
TltANSFOIiMATION OF COOHDINATES Gl … AUT. 31. — FUOM KeCTANGULAU AxKS to JiK( TAN(i[M.AIl Let (x, y) represent any point in the plane referred to theaxes X, F; (x„ y^ the same point referred to the axes X,, \\,where Xj, Yi are obtained by turning A, Y about A througlithe angle a. Now x=AD = An-KD = xl cos a — ./i sin a,y=. P1) = DH+PK…
Geometry, Analytic
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