Analytic geometry for colleges, universities, and technical schools (1892)
Nichols, E. W. (Edward West), 1858- · Boston [Mass.] : Leach, Shewell & Sanborn · leaf 258
be the equations of the two lines. The angle under whichtwo space lines cross each other is measured by the angleformed by two lines drawn through some point parallel totheir directions. … Let OB and OC be two lines drawn through the originparallel to the given lines. Then ^ = f| and^=^.y = tz\ y = tz will be their equations. The angle between these lines is theangle sought. Let go (= BOC) be this angle. 244 SOLID ANALYTIC GEOMETRY. Let a, p, y represent the angles which the line BO…
Geometry, Analytic
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