Plane and solid analytic geometry; an elementary textbook (1904)
Ashton, Charles Hamilton, 1866-1936 · New York, C. Scribner's Sons · leaf 70
Draw MJST through Pl parallel to AB and continue theperpendicular OH to meet it at K. The equation of MNwill be x cos a + y sin a — p1 = 0, where px may be either positive or negative. For, as thevalue of a is fixed and as MN can be any line parallel toAB, it may be on the opposite side of the…
Geometry, Analytic
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