# Show that the product of perpendicular on the line from the points is b2.

Given:

and points

To prove:

The product of perpendicular on the line from the points is b2.

Concept Used:

Distance of a point from a line.

Explanation:

Let d1 and d2 be the perpendicular distances of line from points and respectively.

d1

Similarly,

d1 = -

Now,

d1d2

d1d2

d1d2

d1d2

Hence proved.

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