# circular function

Definitions of circular function
1. noun
function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle
synonyms: trigonometric function
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types:
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sin, sine
ratio of the length of the side opposite the given angle to the length of the hypotenuse of a right-angled triangle
arc sine, arcsin, arcsine, inverse sine
the inverse function of the sine; the angle that has a sine equal to a given number
cos, cosine
ratio of the adjacent side to the hypotenuse of a right-angled triangle
arc cosine, arccos, arccosine, inverse cosine
the inverse function of the cosine; the angle that has a cosine equal to a given number
tan, tangent
ratio of the opposite to the adjacent side of a right-angled triangle
arc tangent, arctan, arctangent, inverse tangent
the inverse function of the tangent; the angle that has a tangent equal to a given number
cotan, cotangent
ratio of the adjacent to the opposite side of a right-angled triangle
arc cotangent, arccotangent, inverse cotangent
the inverse function of the cotangent; the angle that has a cotangent equal to a given number
sec, secant
ratio of the hypotenuse to the adjacent side of a right-angled triangle
arc secant, arcsec, arcsecant, inverse secant
the inverse function of the secant; the angle that has a secant equal to a given number
cosec, cosecant
ratio of the hypotenuse to the opposite side of a right-angled triangle
arc cosecant, arccosecant, inverse cosecant
the angle that has a cosecant equal to a given number
type of:
function, map, mapping, mathematical function, single-valued function
(mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function)
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