西瓜单词

cosine是什么意思

cosine

英 ['kəʊsaɪn] 美 ['kosaɪn]

1. complement + sine.

cosine 余弦

来自短语complementary sine, 补足正弦。

cosine (n.): 1630s, from co. sinus, abbreviation of Medieval Latin complementi sinus (see complement + sine).

1. The cosine rather than the sine is customarily used in this case.

在这种情况下,习惯上用余弦函数而不是正弦函数.

来自辞典例句

3. Let's now examine the simplest wave from where the profile is a sine or cosine curve.: 现在让我们来考察最简单的波形,它的剖面图是正弦或余弦曲线.

4. We derive the addition formulas for sine and cosine from the arithmetic of complex numbers.: 用复数算术推导了正弦,余弦的加法公式.

5. Aim To study some calculation formula of sine function and cosine function.: 目的研究正弦函数和余弦函数的一些计算公式.