Computes a coordinate a given distance along a vector that is defined by a starting coordinate and an azimuth (Angle with respect to North). 
- Parameters:
- 
  
    | coord | (MgCoordinate) An MgCoordinate object in coordinate system units that represents the start of the vector. |  | azimuth | (double) An azimuth (Angle with respect to the North) that defines the direction of the vector. |  | distance | (double) The distance along the vector to the desired coordinate in meters. |  
 
- Returns:
- An MgCoordinate that lies the given distance along the vector.