Pole of a Line

Rarely Tested

Pole of a Line

For the circle:

$$x^2+y^2=a^2$$

if the line is:

$$lx+my=n$$

then its pole is:

$$\left(\frac{a^2l}{n},\frac{a^2m}{n}\right)$$

Usage

- Used to find the point corresponding to a given line under pole-polar theory.

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