Hypertext Webster Gateway: "cotangent"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Cotangent \Co*tan"gent\ (k?-t?n"jent), n. [For co. tangens, an
abbrev. of L. complementi tangens. See {Tangent}.] (Trig.)
The tangent of the complement of an arc or angle. See Illust.
of {Functions}.
From WordNet (r) 1.7 (wn)
cotangent
n : ratio of the adjacent to the opposite side [syn: {cotan}]
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