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

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-mĕtrĭk ]

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.