cotangent

cotangent

[koh-tan-juhnt, koh-tan-]
noun Trigonometry.
1.
(in a right triangle) the ratio of the side adjacent to a given angle to the side opposite.
2.
the tangent of the complement, or the reciprocal of the tangent, of a given angle or arc. Abbreviation: cot, ctn
Also, cotan [koh-tan] .


Origin:
1625–35; < Neo-Latin cotangent- (stem of cotangēns). See co-, tangent

cotangential [koh-tan-jen-shuhl] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To cotangent
Collins
World English Dictionary
cotangent (kəʊˈtændʒənt)
 
n
cot, cotan, Abbreviation: ctn (of an angle) a trigonometric function that in a right-angled triangle is the ratio of the length of the adjacent side to that of the opposite side; the reciprocal of tangent
 
cotangential
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
cotangent   (kō-tān'jənt)  Pronunciation Key 
  1. The ratio of the length of the adjacent side of an acute angle in a right triangle to the length of the opposite side. The cotangent is the inverse of the tangent.

  2. The ratio of the ordinate to the abscissa of the endpoint of an arc of a unit circle centered at the origin of a Cartesian coordinate system, the arc being of length x and measured counterclockwise from the point (1, 0) if x is positive or clockwise if x is negative.

  3. A function of a number x, equal to the cotangent of an angle whose measure in radians is equal to x.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;