cotangential
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cotangent — cotangential /koh tan jen sheuhl/, adj. /koh tan jeuhnt, koh tan /, n. Trig. 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… … Universalium
cotangent — /koʊˈtændʒənt / (say koh tanjuhnt) noun the tangent of the complement, and hence the reciprocal of the tangent, of a given angle. Abbrev.: cot or cotan –cotangential /ˌkoʊtænˈdʒɛnʃəl/ (say .kohtan jenshuhl), adjective …