An equiangular spiral - parametric equation
An equiangular spiral, also known as a logarithmic spiral is a curve with the property that the angle between the tangent and the radius at any point of the spiral is constant.
In polar coordinates: where and are positive real constants.
In parametric form: , where and are real constants.
Move the point over the spiral to see the constant angle between the radius and the tangent.
Consider .