oxford views updated Jun 11 2018
se·cant / ˈsēˌkant; -kənt/ •
n. 1. (abbr.: sec) Math. the ratio of the hypotenuse to the shorter side adjacent to an acute angle (in a right-angled triangle); the reciprocal of a cosine.2. Geom. a straight line that cuts a curve in two or more parts.
oxford views updated May 11 2018
, ratio of the length of the hypotenuse to the length of the side adjacent to an acute angle in a right-angled triangle. The secant of angle A
is usually abbreviated to sec A
, and is equal to the reciprocal of its cosine