... 余切 = cotangent 余切 = cotangents 余兴节目 = cabaret ...
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law of cotangents 余切定律
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同义词： cotan
以上来源于: WordNet
N (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 余切 (Abbreviation cot, cotan, ctn)
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