Definition of

Cosecant

Cosecant

In a right angled triangle, the cosecant of an angle is:

The length of the hypotenuse divided by the length of the side opposite the angle.

The abbreviation is csc

csc θ = hypotenuse / opposite

It is not commonly used, and is equal to 1/sine

../geometry/images/triangle-q.js?mode=csc