secant

noun

se·cant ˈsē-ˌkant How to pronounce secant (audio)

-kənt

: a straight line cutting a curve at two or more points

: a straight line drawn from the center of a circle through one end of a circular arc to a tangent drawn from the other end of the arc

: a trigonometric function that for an acute angle is the ratio of the hypotenuse of a right triangle of which the angle is considered part and the leg adjacent to the angle

: a trigonometric function sec θ that is the reciprocal of the cosine for all real numbers θ for which the cosine is not zero and that is exactly equal to the secant of an angle of measure θ in radians

Word History

Etymology

New Latin secant-, secans, from Latin, present participle of secare to cut — more at saw

First Known Use

1593, in the meaning defined at sense 1

单词	secant
释义	secant noun se·cant ˈsē-ˌkant -kənt 1 : a straight line cutting a curve at two or more points 2 : a straight line drawn from the center of a circle through one end of a circular arc to a tangent drawn from the other end of the arc 3 a : a trigonometric function that for an acute angle is the ratio of the hypotenuse of a right triangle of which the angle is considered part and the leg adjacent to the angle b : a trigonometric function sec θ that is the reciprocal of the cosine for all real numbers θ for which the cosine is not zero and that is exactly equal to the secant of an angle of measure θ in radians Word History Etymology New Latin secant-, secans, from Latin, present participle of secare to cut — more at saw First Known Use 1593, in the meaning defined at sense 1
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