Inverse ratio of the cosine of an angle.

### Notation

The secant of *x* is noted as: “sec(*x*)” which is read as “secant of *x*.”

### Examples

- sec(60) = 2
- sec(30) ≈ 1.155

### Educational note

The argument of the secant is a number and not an angle.

Therefore, it’s a linguistic shortcut to say “*secant of an angle*” instead of “*secant of the measure of an angle*.”