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词汇	cotangent
释义	co·tan·gent AHD[kō-tănʹjənt] D.J.[kəʊˈtændʒənt]K.K.[koˈtændʒənt]n.Abbr. cot, ctnMathematics （名词）缩写 cot, ctn【数学】 cot θ= b/a Clarinda/Academy Artworks The reciprocal of the tangent of an angle in a right triangle.余切：直角三角形中角的正切的倒数 The tangent of the complement of a directed angle or arc.余切：有方向角或弧的补角的正切 Related Forms继承用法co'tangenʹtial AHD[-jĕnʹshəl] （形容词）
随便看	psychasthenia psyche psyche psyche Psyche psyched psychedelia psychedelic psychedelic psychedelics psyches psychiatric hospital psychiatries psychiatrist psychiatrists psychiatry psychic psychic psychic energizer psychics psyching psycho psycho- psycho- psychoacoustics

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