Cotangent

ahd-5
  • noun. The reciprocal of the tangent of an angle in a right triangle.
  • noun. The tangent of the complement of a directed angle or arc.
    • The Century Dictionary and Cyclopedia
  • noun. In trigonom., the tangent of the complement of a given are or angle. Abbreviated cot. See the figure.
    • the GNU version of the Collaborative International Dictionary of English
  • noun. The tangent of the complement of an arc or angle. See Illust. of functions.
    • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. In a right triangle, the reciprocal of the tangent of an angle. Symbols: cot, ctg, or ctn
    • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. ratio of the adjacent to the opposite side of a right-angled triangle
    • Word Usage
    "It can also be used for such operations as involution (raising to a power) and evolution (extraction of a root) and for calculations with trigonometric functions (sine, cosine, tangent, cotangent)."
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