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STRAIGHT LINES - NCERT
ncert.nic.inExample 5 Find the distance between the lines 3x + 4y = 9 and 6x + 8y = 15. Solution The equations of lines 3x + 4y = 9 and 6x + 8y = 15 may be rewritten as 3x + 4y – 9 = 0 and 3x + 4y 15 2 − = 0 Since, the slope of these lines are same and hence they are parallel to each other. Therefore, the distance between them is given by 2 2 15 9 2 3 ...
Mathematics (Syllabus 9758)
www.seab.gov.sg• vector and cartesian equations of lines and planes • finding the foot of the perpendicular and distance from a point to a line or to a plane • finding the angle between two lines, between a line and a plane, or between two planes • relationships between (i) two lines (coplanar or skew) (ii) a line and a plane (iii) two planes