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SpheroidalDistance — distance between two points on a spheroid
Eccentricity ▪ SemimajorAxis
SphericalDistance — distance between two points on a sphere
ToAuthalicRadius — radius of the authalic sphere based on a given spheroid
GeodeticToAuthalic — coordinates of a point on an authalic sphere
ToDegrees — convert a coordinate from DMS to degrees
ToDMS — convert from degrees to DMS