Dictionaryco•se•cantPronunciation: (kō-sē'kunt, -kant), [key] —n. Trigonom. 1. (in a right triangle) the ratio of the hypotenuse to the side opposite a given angle. 2. the secant of the complement, or the reciprocal of the sine, of a given angle or arc. Abbr.: csc Also,cosec. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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