Question

derive the expression for the distance between two parallel lines ax+by+c1 and ax+by+c2=0 ​

Answer 1

Answer:

Let the equations of the lines be ax+by+c1=0 and ax+by+c2=0. Let P(x1, y1) be any point. The required distance d will be PA – PB.

Answer 2

Answer:

d = |C1-C2|/√a²+b²