computes the distance from a latitudal degree to the equator . concode_field_sep PlaceHolder placeHolder concode_field_sep float getLatitudeCircum concode_elem_sep float getTrapezoidSideLen concode_elem_sep float getTrapezoidArea
float function ( double arg0 , double arg1 ) { return ( float ) ( arg1 * Math . sin ( Math . toRadians ( arg0 ) ) ) ; }