trigonometric function

/ˌˈtrɪgənəˌmɛtrɪk ˌfʌŋ(k)ʃən/

Other forms: trigonometric functions

Definitions of trigonometric 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: circular function

   types:

   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)