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
What The… What The… What The… is the seventh and final studio album by American hardcore punk band Black Flag. The album was originally announced to be released on November 5, 2013. However, on November 5, "What The…" was only released through online streaming sources such as Spotify and Rdio, and a physical release date was pushed back to December 3, 2013. It is the band's first full-length studio album since "In My Head" (1985), marking the longest gap between two studio albums in their career, as well as being their first recording with vocalist Ron Reyes since "Jealous Again" (1980) and