noun co·se·cant \(ˌ)kō-ˈsē-ˌkant, -kənt\

Definition of cosecant

  1. 1 :  a trigonometric function that for an acute angle is the ratio between the hypotenuse of a right triangle of which the angle is considered part and the leg opposite the angle

  2. 2 :  a trigonometric function csc θ that is the reciprocal of the sine for all real numbers θ for which the sine is not zero and that is exactly equal to the cosecant of an angle of measure θ in radians

Origin and Etymology of cosecant

New Latin cosecant-, cosecans, from co- + secant-, secans secant

First Known Use: circa 1706

Learn More about cosecant

Seen and Heard

What made you want to look up cosecant? Please tell us where you read or heard it (including the quote, if possible).


a favoring of the simplest explanation

Get Word of the Day daily email!