question: public static LatLon greatCircleEndPosition ( LatLon p , double greatCircleAzimuthRadians , double pathLengthRadians ) { if ( p == null ) { throw new IllegalArgumentException ( "Lat Lon Is Null" ) ; } return greatCircleEndPosition ( p , Angle . fromRadians ( greatCircleAzimuthRadians ) , Angle . fromRadians ( pathLengthRadians ) ) ; }
target:  Computes the location on a great circle arc with the given starting location, azimuth, and arc distance.