trigonometric function
noun Mathematics.
Also called circular function.
a function of an angle, as sine or cosine, expressed as the ratio of the sides of a right triangle.
any function involving only trigonometric functions and constants.
the generalization of these to functions of real or complex numbers.
Also called
trig function
(for defs 1, 2).
Origin of trigonometric function
First recorded in 1905–10
Words nearby trigonometric function
trigone of bladder,
trigonid,
trigonitis,
trigonocephaly,
trigonometric equation,
trigonometric function,
trigonometric series,
trigonometry,
trigonous,
trigonum,
trigram
British Dictionary definitions for trig function
trigonometric function
noun
Also called: circular function
any of a group of functions of an angle expressed as a ratio of two of the sides of a right-angled triangle containing the angle. The group includes sine, cosine, tangent, secant, cosecant, and cotangent
any function containing only sines, cosines, etc, and constants
Scientific definitions for trig function
trigonometric function
[ trĭg′ə-nə-mĕt′rĭk ]
A function of an angle, as the sine, cosine, or tangent, whose value is expressed as a ratio of two of the sides of the right triangle that contains the angle.