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tangent    音标拼音: [t'ændʒənt]
a. 接触的,切线的,相切的,离题的
n. 切线,正切

接触的,切线的,相切的,离题的切线,正切

tangent
正

tangent
正切 切线

tangent
n 1: a straight line or plane that touches a curve or curved
surface at a point but does not intersect it at that point
2: ratio of the opposite to the adjacent side of a right-angled
triangle [synonym: {tangent}, {tan}]

Tangent \Tan"gent\, a. [L. tangens, -entis, p. pr.]
Touching; touching at a single point; specifically (Geom.)
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.
[1913 Webster]

{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.
[1913 Webster]
[1913 Webster]


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]

58 Moby Thesaurus words for "tangent":
abutter, adjoiner, air line, approach, asymptote, axis, beeline,
borderer, bottleneck, bystander, chord, collision course,
concentralization, concentration, concourse, concurrence,
confluence, conflux, congress, convergence, converging, crossing,
diagonal, diameter, direct line, directrix, edge, focalization,
focus, funnel, great-circle course, hub, immediate neighbor,
looker-on, meeting, mutual approach, narrowing gap, neighbor,
neighborer, normal, onlooker, perpendicular, radius, radius vector,
right line, secant, segment, shortcut, side, spokes, straight,
straight course, straight line, straight stretch, straightaway,
streamline, transversal, vector


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  • TANGENT Definition Meaning - Merriam-Webster
    The meaning of TANGENT is an abrupt change of course : digression How to use tangent in a sentence
  • Tangent - Math. net
    The graph of tangent is periodic, meaning that it repeats itself indefinitely Unlike sine and cosine however, tangent has asymptotes separating each of its periods
  • Tangent - Mathwords
    Tangent appears constantly in geometry, physics, and engineering whenever you need to relate vertical and horizontal distances For example, if you know the angle of elevation to the top of a building and your distance from it, tangent lets you calculate the building's height
  • Tangent in trigonometry made simple - Andrea Minini
    The word "tangent" comes from the Latin "tangere," meaning "to touch " Geometrically, the tangent is a line segment perpendicular to the x-axis, originating at point C and intersecting the extended side OP
  • Tangent to Circle, Meaning, Properties, Examples - Cuemath
    Tangent in geometry is defined as a line or plane that touches a curve or a curved surface at exactly one point Learn about tangent definition along with properties and theorems
  • Understanding Tangent: A Comprehensive Guide to Trigonometrys . . .
    Tangent is a fundamental trigonometric ratio defined as the ratio of the length of the side opposite an angle in a right triangle to the length of the adjacent side It is a critical concept in trigonometry and finds wide application in various fields





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