Sine
[saɪn]
Definition
(noun.) ratio of the length of the side opposite the given angle to the length of the hypotenuse of a right-angled triangle.
Checked by Letitia--From WordNet
Definition
(n.) The length of a perpendicular drawn from one extremity of an arc of a circle to the diameter drawn through the other extremity.
(n.) The perpendicular itself. See Sine of angle, below.
(prep.) Without.
Edited by Johanna
Definition
n. a straight line drawn from one extremity of an arc perpendicular to the diameter that passes through the other extremity.
prep. without as in Sine die without day of an adjournment; Sine qu?non an indispensable condition &c.
adv. (Scot.) after that: ago.—conj. since.
Checked by Judith
Examples
- In all typewriters accurate location of the impression is essential to proper alignment of the letters, and proper alignment is the _sine qua non_ of typewriting. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- A second developed a trigonometry of sines to replace the Ptolemaic trigonometry of chords. Walter Libby. An Introduction to the History of Science.
Checker: Rita