# Tangent of an arc

Tangent of an arc
Tangent Tan"gent, n. [L. tangens, -entis, p. pr. of tangere to touch; akin to Gr. ? having seized: cf. F. tangente. Cf. {Attain}, {Contaminate}, {Contingent}, {Entire}, {Tact}, {Taste}, {Tax}, v. t.] (Geom.) A tangent line curve, or surface; specifically, that portion of the straight line tangent to a curve that is between the point of tangency and a given line, the given line being, for example, the axis of abscissas, or a radius of a circle produced. See {Trigonometrical function}, under {Function}. [1913 Webster]

{Artificial tangent}, or {Logarithmic tangent}, the logarithm of the natural tangent of an arc.

{Natural tangent}, a decimal expressing the length of the tangent of an arc, the radius being reckoned unity.

{Tangent galvanometer} (Elec.), a form of galvanometer having a circular coil and a short needle, in which the tangent of the angle of deflection of the needle is proportional to the strength of the current.

{Tangent of an angle}, the natural tangent of the arc subtending or measuring the angle.

{Tangent of an arc}, a right line, as ta, touching the arc of a circle at one extremity a, and terminated by a line ct, passing from the center through the other extremity o. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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• Tangent — Tan gent, n. [L. tangens, entis, p. pr. of tangere to touch; akin to Gr. ? having seized: cf. F. tangente. Cf. {Attain}, {Contaminate}, {Contingent}, {Entire}, {Tact}, {Taste}, {Tax}, v. t.] (Geom.) A tangent line curve, or surface; specifically …   The Collaborative International Dictionary of English

• Tangent galvanometer — Tangent Tan gent, n. [L. tangens, entis, p. pr. of tangere to touch; akin to Gr. ? having seized: cf. F. tangente. Cf. {Attain}, {Contaminate}, {Contingent}, {Entire}, {Tact}, {Taste}, {Tax}, v. t.] (Geom.) A tangent line curve, or surface;… …   The Collaborative International Dictionary of English

• Tangent of an angle — Tangent Tan gent, n. [L. tangens, entis, p. pr. of tangere to touch; akin to Gr. ? having seized: cf. F. tangente. Cf. {Attain}, {Contaminate}, {Contingent}, {Entire}, {Tact}, {Taste}, {Tax}, v. t.] (Geom.) A tangent line curve, or surface;… …   The Collaborative International Dictionary of English

• tangent — tangent, ente [ tɑ̃ʒɑ̃, ɑ̃t ] adj. • 1683; lat. tangens, entis, de tangere « toucher » 1 ♦ Géom. Qui n a qu un point de contact en un seul point. (1705) Plan tangent à une surface : ensemble des tangentes en un point à cette surface, formant… …   Encyclopédie Universelle

• Arc — may refer to: Computing and gaming*Arc (programming language), a Lisp dialect in development by Paul Graham *.arc, a file extension for archive files *arc, the command line interface for ArcInfo *Arc System Works, a video game… …   Wikipedia

• Tangent arc — can refer to two optical phenomena or halos: * Upper tangent arc * Lower tangent arc See also * Circumscribed halo …   Wikipedia

• tangent balance — tangent balance, a balance in which the weight is shown on a graduated arc by a pointer attached to the beam …   Useful english dictionary

• arc — 1. arc [ ark ] n. m. • 1080; lat. arcus 1 ♦ Arme formée d une tige souple (de bois, de métal) que l on courbe au moyen d une corde attachée aux deux extrémités pour lancer des flèches. Arc et arbalète. Bander, tendre l arc. Tirer des flèches avec …   Encyclopédie Universelle

• Artificial tangent — Tangent Tan gent, n. [L. tangens, entis, p. pr. of tangere to touch; akin to Gr. ? having seized: cf. F. tangente. Cf. {Attain}, {Contaminate}, {Contingent}, {Entire}, {Tact}, {Taste}, {Tax}, v. t.] (Geom.) A tangent line curve, or surface;… …   The Collaborative International Dictionary of English

• Logarithmic tangent — Tangent Tan gent, n. [L. tangens, entis, p. pr. of tangere to touch; akin to Gr. ? having seized: cf. F. tangente. Cf. {Attain}, {Contaminate}, {Contingent}, {Entire}, {Tact}, {Taste}, {Tax}, v. t.] (Geom.) A tangent line curve, or surface;… …   The Collaborative International Dictionary of English