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词汇 sine
释义
sine
noun [ C ] mathematics specialized uk/saɪn/ us/saɪn/ (written abbreviation sin)
正弦
(in a triangle that has one angle of 90°) the ratio of the length of the side opposite an angle less than 90° divided by the length of the hypotenuse (= the side opposite the 90° angle)
Compare: cosine tangent (TRIANGLE)
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