Equation of Line: Normal Form

Equation of Line: Normal Form

## Formula

$$x\cos\alpha+y\sin\alpha=p$$

## Terminologies

- $$p$$ → Perpendicular distance of the line from the origin.

- $$\alpha$$ → Angle made by the perpendicular from the origin with the positive $$x$$-axis.

## Usage

- Used when the perpendicular distance from the origin and its direction are known.