trigonometric function

trigonometric function

In a right triangle, the three main trigonometric functions are

sine θ = opposite / hypotenuse

cosine θ = adjacent / hypotenuse

tangent θ = opposite / adjacent.

trigonometric function

n.

A function of an angle expressed as the ratio of two of the sides of a right triangle that contains that angle; the sine, cosine, tangent, cotangent, secant, or cosecant. Also called circular function.

trigonometric function

n

1. (Mathematics) 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

2. (Mathematics) any function containing only sines, cosines, etc, and constants

trig′onomet′ric func′tion

n.

a function of an angle, as the sine or cosine, expressed as the ratio of the sides of a right triangle.

Also called circular function.

[1905–10]

trigonometric function

In a right triangle, the trigonometric functions are: sine θ = ^opposite/_hypothenuse cosine θ = ^adjacent/_hypothenuse tangent θ = ^opposite/_adjacent

trig·o·no·met·ric 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.

Thesaurus

Noun

1.

trigonometric function - function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle circular function function, mapping, mathematical function, single-valued function, map - (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) sine, sin - 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 tangent, tan - 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