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## secant

secant, in mathematics. 1 In geometry, a secant is a straight line cutting a curve or surface. If it intersects the curve in two different points, as in the secant of a circle, the segment of the secant between the points is called a chord. The limiting position of a secant, if such a limit exists, is called the tangent to the curve or surface at that point. 2 A trigonometric function. See trigonometry.

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"secant." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 16 Dec. 2017 <http://www.encyclopedia.com>.

"secant." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (December 16, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/secant

"secant." The Columbia Encyclopedia, 6th ed.. . Retrieved December 16, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/secant

## secant

se·cant / ˈsēˌkant; -kənt/ • n. 1. (abbr.: sec) Math. the ratio of the hypotenuse to the shorter side adjacent to an acute angle (in a right-angled triangle); the reciprocal of a cosine. 2. Geom. a straight line that cuts a curve in two or more parts.

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"secant." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 16 Dec. 2017 <http://www.encyclopedia.com>.

"secant." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (December 16, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/secant

"secant." The Oxford Pocket Dictionary of Current English. . Retrieved December 16, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/secant

## secant

secant In trigonometry, ratio of the length of the hypotenuse to the length of the side adjacent to an acute angle in a right-angled triangle. The secant of angle A is usually abbreviated to sec A, and is equal to the reciprocal of its cosine.

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"secant." World Encyclopedia. . Encyclopedia.com. 16 Dec. 2017 <http://www.encyclopedia.com>.

"secant." World Encyclopedia. . Encyclopedia.com. (December 16, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/secant

"secant." World Encyclopedia. . Retrieved December 16, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/secant

## secant

secant in full s. line. XVI. — F. sécant adj., sécante sb. — modL. use of L. secāns, -ant-, prp. of secāre cut; see SECTION, -ANT.