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.
Define Mean for Math. In math, the mean is the average of a set of numbers. To find the mean of a data set, add up all of the numbers in the set, and then divide that total by the number of numbers in the set. In statistics, the mean is one of the three measures of central tendency, which are single numbers that try to pinpoint the central location within a data set.