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WORDNET DICTIONARY

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OXFORD DICTIONARY

**sine**(n = noun.linkdef) sin - ratio of the length of the side opposite the given angle to the length of the hypotenuse of a right-angled triangle;
is a kind of
circular function,
trigonometric function

The length of a perpendicular drawn from one extremity of an arc of a circle to the diameter drawn through the other extremity. [*1913 Webster*]

Without. [*1913 Webster*]

1 the trigonometric function that is equal to the ratio of the side opposite a given angle (in a right-angled triangle) to the hypotenuse.

2 a function of the line drawn from one end of an arc perpendicularly to the radius through the other.

Idiom

sine curve (or wave) a curve representing periodic oscillations of constant amplitude as given by a sine function: also called SINUSOID.

Etymology

L sinus curve, fold of a toga, used in med.L as transl. of Arab. jayb bosom, sine

See related words and definitions of word "sine" in Indonesian