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Distance of a Point from an Asymptote
For the asymptote:
$$bx-ay=0$$
the perpendicular distance of $$P(x_1,y_1)$$ from it is:
$$d=\frac{|bx_1-ay_1|}{\sqrt{a^2+b^2}}$$
Usage
- Used in problems involving the distance of a point on the hyperbola from an asymptote.
