余弦的英文：
cosine
- hyperbolic cosine.
双曲线函数之余弦 - Sine-cosine potentiometer
正余弦电位器 - DCT(Discrete Cosine Transform)
离散余弦变换 - 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。 - 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。 - 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。 - Each module was an arithmetical command such as add, subtract, multiply, cosine, sine.
每一个组件都是一种算数指令，诸如加、减、乘、余弦、正弦。 - Let's now examine the simplest wave form 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。
n. 余弦
- 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。 - 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。 - Each module was an arithmetical command such as add, subtract, multiply, cosine, sine.
每一个组件都是一种算数指令，诸如加、减、乘、余弦、正弦。 - The nine elements of the matrix are products of cosines of angles between the direction of a streamline at a point and the coordinate axis
这矩阵的9个元素系一点的流线方向和座标轴之间夹角余弦的乘积。