sine

FREQ #36868

n. 正弦 [计] 正弦

发音

其它 /saɪn/
US /saɪn/

词形变化

sines 复数 sines

释义与例句

n.
  1. 1.

    In a right triangle, the ratio of the length of the side opposite an angle to the length of the hypotenuse.

    正弦

    数学

词汇关系

名词

同义词 1

sin

上位词 2

circular function trigonometric function

相关短语

sine wave [计] 正弦波 sine qua non n. 必要条件, 要素 sine die adv. 无限期地, 无确定日期地 sine ratio sine quâ non sine waves sine qua nons sine quibus non sine formula sine law [电] 正弦定律 sine rule sine ratios sine curve [电] 正弦曲线 sine curves Latino sine Flexione

词源

Etymology tree Proto-Indo-European *sinos Proto-Italic *sinus Latin sinusbor. English sine Borrowed from Latin sinus (“curve, bend; bosom”), a translation of Arabic جَيْب (jayb, “bosom”), a misidentification of the notation جيب (j-y-b), written without vowel diacritics, standing for Arabic جِيبَ (jība, “sine”), in turn from Sanskrit ज्या (jyā, “sine, chord, bowstring”) through the similar Sanskrit जीव (jīva, “sine, chord, life, existence”). Doublet of sinus.

来源：wiktionary