单词	cotangent
释义	cotangent /kəʊˈtandʒ(ə)nt / noun Mathematics (In a right-angled triangle) the ratio of the side (other than the hypotenuse) adjacent to a particular acute angle to the side opposite the angle.If the tangent of an angle is a/b then the cotangent of that angle is b/a.... The first tabulates logarithms of the sine, cosine, tangent and cotangent functions at 1 intervals and shows how to solve triangles using logarithmic functions. I can't tell the difference between radians, tangents, cotangents, secants, etc. Rhymes plangent, tangent
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