# Secant (sec) Calculator

### Secant (sec) Calculator

Calculated sec() of the number

### sec() function

Secant is the ratio of the hypotenuse to the shorter side adjacent to an acute angle (in a right-angled triangle); the reciprocal of a cosine.

This is an online free sec calculator. You can calculate value of sec() trignometric function easily using this tool.

### Important Abbreviations to remember

• SOH: Opposite / Hypotenuse (Sine)
• CAH: Adjacent / Hypotenuse (Cosine)
• TOA: Opposite / Adjacent (Tangent)

### Understanding the Main Trigonometric Functions

In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are functions of an angle. They relate the angles of a triangle to the lengths of its sides. Degrees and Radians are units of measuring these angles. Degrees originated as an unit to measure how far constellations moved in a day (1 degree ~ 1 day of movement). Degrees measure angles by how far we tilted our heads(Observer's view point). Radians measure angles by distance traveled(Movers's view point).