A line 'l' passing through origin is perpendicular to the lines
If the co-ordinates of the point in the first octant on 'l2' at a distance of from the point of intersection of 'l' and 'l1' are (a, b, c), then 18(a + b + c) is equal to ______.
Option: 1 36
Option: 2 54
Option: 3 72
Option: 4 44
Let equation of line l is
since the line, l pass via origin so,
or
And also line l is perpendicular to l1 and 12
Point A lies on lie on the line l1
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