an inward turn or curve around an axis or fixed point.
1590s, “turning in of the toes” (especially in dancing), from in + turn.
noun, Mathematics. 1. the function that replaces another function when the dependent and independent variables of the first function are interchanged for an appropriate set of values of the dependent variable. In y = sin x and x = arc sin y, the inverse function of sin is arc sine.
noun, Mathematics. 1. the point or set of points in the domain of a function corresponding to a given point or set of points in the range of the function.
[in-vurs-lee] /ɪnˈvɜrs li/ adverb 1. in an manner. 2. Mathematics. in proportion.
noun, Trigonometry. 1. . noun, Trigonometry. 1. the angle, measured in radians, that has a secant equal to a given number. Symbol: sec −1. Abbreviation: arc sec; arc secant The inverse of the secant function.