Circle with Secant
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A secant is “a line which cuts a figure in any way. Specifically, in trigonometry, a line from the center of a circle through one extremity of an arc (whose secant it is said to be) to the tangent from the other extremity of the same arc; or the ratio of this line to the radius; the reciprocal of the cosine. The ratio of AB to AD is the secant of the angle A; and AB is the secant of the arc CD.” —Whitney, 1889
Keywords
geometry, circle, arc, radius, line, tangent, angle, Segment, intersect, trigonometry, cosine, secant, ration, reciprocalSource
William Dwight Whitney, PhD, LLD The Century Dictionary: An Encyclopedic Lexicon of the English Language (New York, NY: The Century Co., 1895) 5451
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