Analytic geometry, for technical schools and colleges (1897)
Lambert, Preston Albert, 1862-1925 · New York, Macmillan · leaf 99
, makingan angle of 135° with the A-axis. 8. On the straight line through (- 2, 3), making an angle of 30° withthe A-axi-s, find the coordinates of the point whose distance from( - 2, 3) is 0. 9. The vertices of a triangle are (3, 7), (5, - 1), (-3, 5). Writeequations of meilians. 84 ANALYTIC… … — tanF= When the 1 + ?«?ulines are parallel, V=0, whichrequires that m — m. When the lines are perpendicular, F=00°, Avhich requires that 1 -\-mm = 0. or m= mIf the e<|uations of the lines are written in the form Ax + By+C=0, Ax + ]^y+a = 0, tanF^^^-||. The lines are parallel when AB — AB = 0,…
Geometry, Analytic
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