# Ordinate of a point of a circle (trigonometric function)

## Description

The ordinate of point of a circle, in an x–y Cartesian coordinate system, can be computed by the ordinate of the center of the circle, the radius and the angle that the ray from the center of the circle to the point makes with the x-axis

Related formulas## Variables

y | The ordinate of the point of the circle (m) |

b | The ordinate of the center of the circle (m) |

r | Radius of the circle (m) |

θ | The angle that the ray from the center of the circle to the point makes with the x-axis (radians) |