| 单词 | sine |
| 释义 | sine n. Math. 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. Phrases and idioms 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 |
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