Cosine Definition
kōsīn
cosines
noun
cosines
The reciprocal of the secant.
Webster's New World
In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse.
American Heritage
The abscissa at the endpoint of an arc of a unit circle centered at the origin of a Cartesian coordinate system, the arc being of length x and measured counterclockwise from the point (1, 0) if x is positive or clockwise if x is negative.
American Heritage
Synonyms:
Other Word Forms of Cosine
Noun
Singular:
cosine
Plural:
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