TANGENTS

Noun

tangents

plural of tangent

Source: Wiktionary

TANGENT

Tan"gent, n. Etym: [L. tangens, -entis, p.pr. of tangere to touch; akin to Gr. tangente. Cf. Attain, Contaminate, Contingent, Entire, Tact, Taste, Tax, v. t.] (Geom.)

Definition: 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. Artificial, 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.

Tan"gent, a. Etym: [L. tangens, -entis, p.pr.]

Definition: Touching; touching at a single point; specifically (Geom.)

Definition: meeting a curve or surface at a point and having at that point the same direction as the curve or surface; -- said of a straight line, curve, or surface; as, a line tangent to a curve; a curve tangent to a surface; tangent surfaces. Tangent plane (Geom.), a plane which touches a surface in a point or line.

– Tangent scale (Gun.), a kind of breech sight for a cannon.

– Tangent screw (Mach.), an endless screw; a worm.

Source: Webster’s Unabridged Dictionary 1913 Edition

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