Noun: circular function 'sur-kyu-lu(r) 'fúngk-shun
- Function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle
"Sine, cosine, and tangent are common circular functions";
- trigonometric function
Derived forms: circular functions
Type of: function, map, mapping, mathematical function, single-valued function
Encyclopedia: Circular function