单词	trigonometric function
释义	trigonometric function noun 1 : a function (such as the sine, cosine, tangent, cotangent, secant, or cosecant) of an arc or angle most simply expressed in terms of the ratios of pairs of sides of a right-angled triangle called also circular function 2 : the inverse (such as the arcsine, arccosine, or arctangent) of a trigonometric function Example Sentences Recent Examples on the Web Spacecraft software demands sophisticated mathematical programming, full of matrix operations, trigonometric functions, and multiple precision variables. Frank O’brien, Ars Technica, 30 Jan. 2020 Word History First Known Use 1909, in the meaning defined at sense 1
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