In those zoning district(s) where the adult businesses regulated by this section would otherwise be permitted uses, it shall be unlawful to establish any adult business if the location is within 750 feet of any existing residential zone, park, religious institution, school, or child day care facility. The distances set forth above shall be measured between the nearest property line of the facility or tenant space housing the adult business or the proposed adult business, and the nearest property line included within the residential zone, park, religious institution, school or child day care facility, along a straight line extended between the two points.