cosine

• n. [数] 余弦

助记提示

中文词源

来自短语complementary sine, 补足正弦。

英文词源

cosine (n.)

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

双语例句

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

2. This requires two sine - cosine resolvers.

这就需要两个正余弦分解器.

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.

来自辞典例句

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.

来自辞典例句

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.

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