# Secant of an Angle

## Secant of an Angle

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.”