noun. the inverse function of the secant; the angle that has a secant equal to a given number.
- arc secant
- inverse secant
- trigonometric function
Example sentences of the word arcsec
1. Noun, singular or mass
This and the above section illustrate the utility of the arcsecond or arcsec: Very small fragments of circles can have considerable proportions if the size of the circle as a whole is sufficiently great!