An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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trigonometric function
  کریای ِ سه‌برسنجیک  
karyâ-ye sebarsanjik
Fr.: fonction circulaire, ~ trigonomtérique  

A function of an angle, one of six functions (sine, cosine, tangent, cotangent, secant, and cosecant) that represent ratios of sides of right triangles. Also called circular function.

See also: → trigonometric; → function.