The terms cat-rigged, and catboat, should not be confused with catamarans. Catamarans are not related to the term cat-rigged, though catamarans can be cat-rigged, if they have a single sail and no jib. The term 'cat' may come from the 'cat head', [citation needed] a protruding cross beam, not far behind the bow, or head, of a sailing ship, to which the anchor was attached when the vessel was preparing for sea. The mast of a cat-rigged boat is stepped near the point that the 'cat head' would be. See also. Glossary of nautical terms; References
1. Degrees are a unit of angle measure. A full circle is divided into 360 degrees. For example, a right angle is 90 degrees. A degree has the symbol Â° and so ninety degrees would written 90Â°. Another unit of angle measure is the radian. 1  See Angles measured in degrees.
Degrees of freedom is a mathematical equation used in mechanics, physics, chemistry and statistics. The statistical application of degrees of freedom is quite broad and students can expect to need to calculate degrees of freedom early on in statistics coursework.