Circle of latitude can be calculated by a common sine or cosine function. The 60th parallel north or south is half as long as the Equator (disregarding Earth's minor flattening by 0.3%). A circle of latitude is perpendicular to all meridians. The latitude of the circle is approximately the angle between the Equator and the circle, with the angle's vertex at Earth's centre. The equator is at 0°, and the North Pole and South Pole are at 90° north and 90° south, respectively. The Equator is the longest circle of latitude and is the only circle of latitude which also is a great
Latitude Festival Women were advised against going anywhere on site unaccompanied. Latitude 2011 (the sixth edition) took place on 14–17 July 2011. The first line up announcements were revealed on 14 March 2011. The three Obelisk headliners were revealed as well as a number of other artists and acts appearing across all stages. Latitude 2012 (the seventh edition) took place on 12–15 July 2012. The first line up announcements were revealed on 5 March 2012. The three Obelisk headliners were revealed alongside the three Word Arena headliners, as well as a number of other artists and acts appearing across all stages. What