circular function

Từ điển WordNet v3.1 - WordNet Dictionary

noun

function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle
• Syn:
trigonometric function
• Hypernyms:
function, mathematical function, single-valued function, map, mapping
• Hyponyms:
sine, sin, arc sine, arcsine, arcsin,
inverse sine, cosine, cos, arc cosine, arccosine, arccos,
inverse cosine, tangent, tan, arc tangent, arctangent, arctan,
inverse tangent, cotangent, cotan, arc cotangent, arccotangent, inverse cotangent,
secant, sec, arc secant, arcsecant, arcsec, inverse secant,
cosecant, cosec, arc cosecant, arccosecant, inverse cosecant