Latitude exact relationship of parallels and meridians with horizontal and vertical: both are complicated curves. On the sphere the normal passes through the centre and the latitude () is therefore equal to the angle subtended at the centre by the meridian arc from the equator to the point concerned. If the meridian distance is denoted by then where denotes the mean radius of the Earth. is equal to . No higher accuracy is appropriate for since higher-precision results necessitate an ellipsoid model. With this value for the meridian length of 1 degree of latitude on the sphere is (60.0 nautical miles).
Equal Ever After on the record." In a profile piece in the "London Evening Standard", Katie Law described "Equal Ever After" as a "a minute-by-minute, tub-thumping, 326-page account." Equal Ever After Equal Ever After: The Fight for Same-Sex Marriage - And How I Made it Happen is a 2016 book by British politician Lynne Featherstone, published by Biteback Publishing. Featherstone, the Member of Parliament for Hornsey and Wood Green (2005–15) served as Parliamentary Under-Secretary for Equalities in the Conservative-Liberal Democrat coalition. In this role she worked to ensure the legalisation of Same-sex marriage in the United Kingdom. "Equal Ever After" seeks to present