# arc cosine

arc cosine
Trig. the angle, measured in radians, that has a cosine equal to a given number. Abbr.: arc cos; Symbol: cos-1 Also called inverse cosine.
[1905-10]

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Universalium. 2010.

### Look at other dictionaries:

• arc cosine — noun the inverse function of the cosine; the angle that has a cosine equal to a given number • Syn: ↑arccosine, ↑arccos, ↑inverse cosine • Hypernyms: ↑trigonometric function, ↑circular function * * * noun …   Useful english dictionary

• arc — [α:k] noun 1》 a curve forming part of the circumference of a circle or other figure.     ↘a curving trajectory.     ↘[as modifier] Mathematics indicating the inverse of a trigonometrical function: arc cosine. 2》 a luminous electrical discharge… …   English new terms dictionary

• arc cos — See arc cosine. * * * …   Universalium

• arc cos — See arc cosine …   Useful english dictionary

• Cosine — Co sine (k? s?n), n. [For co. sinus, an abbrev. of L. complementi sinus.] (Trig.) The sine of the complement of an arc or angle. See Illust. of {Functions}. [1913 Webster] …   The Collaborative International Dictionary of English

• cosine — /koh suyn/, n. 1. Trigonom. a. (in a right triangle) the ratio of the side adjacent to a given angle to the hypotenuse. b. the sine of the complement of a given angle or arc. Abbr.: cos 2. Math. (of a real or complex number x) the function cos x… …   Universalium

• cosine — co•sine [[t]ˈkoʊ saɪn[/t]] n. math. a) (in a right triangle) the ratio of the side adjacent to a given angle to the hypotenuse b) the sine of the complement of a given angle or arc Abbr.: cos • Etymology: 1625–35; < NL cosinus. See co , sine …   From formal English to slang

• inverse cosine — noun the inverse function of the cosine; the angle that has a cosine equal to a given number • Syn: ↑arc cosine, ↑arccosine, ↑arccos • Hypernyms: ↑trigonometric function, ↑circular function * * * noun …   Useful english dictionary

• inverse cosine — Trig. See arc cosine. [1905 10] * * * …   Universalium

• Meridian arc — In geodesy, a meridian arc measurement is a highly accurate determination of the distance between two points with the same longitude. Two or more such determinations at different locations then specify the shape of the reference ellipsoid which… …   Wikipedia