正割的数学符号为 ，出自英文secant。 该符号最早由数学家 吉拉德·笛沙格 在他的著作《三角学》中所用。

A chord is an interval of a secant line, the portion of the line that lies within the curve.

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 …

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'.

正割 （Secant， ）是 三角函数 的一种。 它的 定义域 是不含 （或 180°k+90°，其中 为整数）的整个 实数集， 值域 是 绝对值 大于等于 一 的 实数。

Secant function is one of the important trigonometric functions in trigonometry. It is equal to the ratio of the hypotenuse and the base of a right-angled triangle.

正割的数学符号为sec出自英文secant。 该符号最早由数学家吉拉德·笛沙格在他的著作《三角学》中所用。

Illustrated definition of Secant (function): In a right angled triangle, the secant of an angle is: The length of the hypotenuse divided by the length of the...

Jul 23, 2025 · Secant is one of the six basic trigonometric ratios and its formula is secant (θ) = hypotenuse/base, it is also represented as, sec (θ). It is the inverse (reciprocal) ratio of the cosine …

Nov 22, 2025 · The secant function f (x) = sec (x) is defined as the reciprocal of the cosine function. It assigns to each angle x (measured in radians) the value 1 / cos (x).