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Webster’s Dictionary (1828)

98,828 entries. Headwords are matched first, then definition text.

3 words match “COTANGENT”

COTANGENT n.
The tangent of the complement of an arc or angle. See Illust. of Functions.
FUNCTION n.
E Then BD is the sine 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)…
MESOLOGARITHM n.
A logarithm of the cosine or cotangent. [Obs.] Kepler. Hutton.