Secant  Definition, Formulas, & Facts  Britannica
secant, one of the six trigonometric functions, which, in a right triangle ABC, for an angle A, is sec A = length of hypotenuse / length of side adjacent angle A. (The other five trigonometric functions are sine [sin], cosine [cos], tangent [tan], cosecant [csc], and cotangent [cot].)
Secant function (sec)  Trigonometry  Math Open Reference
In a right triangle, the secant of an angle is the length of the hypotenuse divided by the length of the adjacent side. In a formula, it is abbreviated to just 'sec'. Of the six possible trigonometric functions, secant, cotangent, and cosecant, are rarely used.
Trigonometric functions  Wikipedia
In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) [1] are real functions which relate an angle of a rightangled triangle to ratios of two side lengths.
Secant  Wikipedia
Secant is a term in mathematics derived from the Latin secare ("to cut"). It may refer to: a secant line, in geometry. the secant variety, in algebraic geometry. secant (trigonometry) (Latin: secans), the multiplicative inverse (or reciprocal) trigonometric function of the cosine.
Secant line  Wikipedia
In geometry, a secant is a line that intersects a curve at a minimum of two distinct points. [1] The word secant comes from the Latin word secare, meaning to cut. [2] In the case of a circle, a secant intersects the circle at exactly two points.
Secant Function  Formula, Graph, Domain and Range ...  Cuemath
The secant function or sec function can be defined as the ratio of the length of the hypotenuse to that of the length of the base in a rightangled triangle. It is the reciprocal of cosine function and hence, is also written as sec x = 1 / cos x.
Secant Line  from Wolfram MathWorld
A secant line, also simply called a secant, is a line passing through two points of a curve. As the two points are brought together (or, more precisely, as one is brought towards the other), the secant line tends to a tangent line.
Secant  Math.net
A secant is a line that intersects a curve at a minimum of two different points. The secant line above cuts (intersects) the curve at three distinct points. Secants and circles. In Geometry, secant lines are often used in the context of circles. The secant line below, in red, intersects the circle with center O, twice.
Secant (function) Definition (Illustrated Mathematics Dictionary)
Secant (function) more ... In a right angled triangle, the secant of an angle is: The length of the hypotenuse divided by the length of the adjacent side. The abbreviation is sec. sec (θ) = hypotenuse / adjacent. It is not commonly used, and is equal to 1/cosine. Sine, Cosine, Tangent.
Tangent Lines and Secant Lines  Math is Fun
A tangent line just touches a curve at a point, matching the curve's slope there. (From the Latin tangens "touching", like in the word "tangible".) A secant line intersects two or more points on a curve. (From the Latin secare "cut or sever") They are lines, so extend in both directions infinitely.
