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In geometry, a secant is a line that intersects a curve at a minimum of two distinct points. [1] ... This page was last edited on 14 September 2024, at 01:30 (UTC).
3.3 Secants and cosecants of sums. 3.4 Ptolemy's theorem. 4 Multiple-angle and half-angle formulae. ... The sum-to-product identities are as follows: [30] ...
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
A circular segment (in green) is enclosed between a secant/chord (the dashed line) and the arc whose endpoints equal the chord's (the arc shown above the green area). In geometry, a circular segment or disk segment (symbol: ⌓) is a region of a disk [1] which is "cut off" from the rest of the disk by a straight line.
In numerical analysis, the secant method is a root-finding algorithm that uses a succession of roots of secant lines to better approximate a root of a function f. The secant method can be thought of as a finite-difference approximation of Newton's method , so it is considered a quasi-Newton method .
Next to the intersecting chords theorem and the tangent-secant theorem, ... This page was last edited on 30 August 2023, at 16:24 (UTC).
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The tangent line is a limit of secant lines just as the derivative is a limit of difference quotients. For this reason, the derivative is sometimes called the slope of the function f. [48]: 61–63 Here is a particular example, the derivative of the squaring function at the input 3. Let f(x) = x 2 be the squaring function.