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Cutting; divivding into two parts; as, a secant line.

The secant of the complement of an arc or angle. See Illust. of Functions.

Dividing into parts; crossing; intersecting.

or 360º. -- Circular lines, straight lines pertaining to the circle, as sines, tangents, secants, etc. -- Circular note or letter. (a) (Com.) See under Credit. (b) (Diplomacy) A letter addressed in identical terms to a number of persons. -- Circular numbers (Arith.), those whose powers terminate in the same digits a…

of the arc AB; OD or EB is the cosine, AF is the tangent, CG is the cotangent, OF is the secant OG is the cosecant, AD is the versed sine, and CE is the coversed sine of the are AB. If the length of AB be represented by x (OA being unity) then the lengths of Functions. these lines (OA being unity) are the trigonometri…

d in solving the different cases of plane and spherical trigonometry, as sines, tangents, secants, and the like. These lines, or the lengths of them, are trigonometrical functions of the arcs and angles to which they belong. -- Trigonometrical survey. See under Survey.