prove that the distance between parrallel lines y=mx + c1 and y=mx +c2 is{plz answer fast}

Asked by Priyanshi Tyagi | 7th Feb, 2012, 10:31: AM

Expert Answer:

Since the lines are parallel ,
So distance of origin from 1st line is d1 = |c1|/root(1+m^2)
Similarly distance of origin from second line is d2 = |c2|/root(1+m^2)
Now origin lies on the same side of both the lines , so
Distance between the lines = d1-d2 = |c1-c2|/root(1+m^2)

Answered by  | 7th Feb, 2012, 02:24: PM

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