- (in a right triangle) the ratio of the hypotenuse to the side adjacent to a given angle.
- (originally) a line from the center of a circle through one extremity of an arc to the tangent from the other extremity.
- the ratio of the length of this line to that of the radius of the circle; the reciprocal of the cosine of a given angle or arc. Abbreviation: sec
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Origin of secant
OTHER WORDS FROM secantse·cant·ly, adverb
Words nearby secant
Example sentences from the Web for secant
On any secant of an hyperbola the segments between the curve and the asymptotes are equal.
The fraction Δy/Δx is the trigonometrical tangent of the angle which the secant PP′ makes with the axis of x.
If the curve has a tangent at P the secant PP′ approaches a limiting position (see 33 below).
There is no necessary connexion between a conical projection and any touching or secant cone.
I say they are equall in the alterne angles of the secant and touch line oey, and oeu.The Way To Geometry|Peter Ramus