Y = √(r^2 - x^2)

Definition

This equation represents part of a circle with radius r centered at the origin (0, 0). It gives the y-coordinate of a point on the circle's circumference based on its x-coordinate.

Related terms

Circle: A set of points in a plane that are equidistant from a fixed point called the center.

Radius:

The distance between the center of a circle and any point on its circumference.

Coordinate Plane: A two-dimensional plane formed by two perpendicular number lines called axes, usually labeled x-axis and y-axis.