你不可以使用高级三角知识例如正弦余弦等.
You may not use more advanced trigonomery, such as the law of sines, the law of cosines, etc.
并用正弦和余弦信号实现保密通信应用。
Then using sine and cosine signal realized secure communication application.
函数的作用是：返回一个数值的余弦值。
离散余弦变换是分析图像信号的有效工具。
Discrete Cosines Transform (DCT) is an effective tool for analysis image signal.
title可以缩写为t，正如我们对余弦曲线的设置。
The title can be abbreviated to t, as we do for the cosine curve.
被限定的余弦函数之反函数叫做反余弦函数。
The inverse function of that restricted cosine function is called the arccosine function.
上面，我们在同一图中绘制了正弦和余弦曲线。
Above, we plotted both the sine and cosine on the same graph.
我们还可以通过解出式中余弦的方法，得到两向量间的角度。
And, we can use that to measure angles between vectors by solving for cosine in this.
于是余弦定理从此不再是一个纯粹的初等几何问题。
Then cosine theorem is no longer a pure problem from elementary geometry.
在这种情况下，习惯上用余弦函数而不是正弦函数。
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。
The cosine rather than the sine is customarily used in this case .
加、乘、余弦等的相互组合能产生任何我们可以想到的数学方程。
Add, multiply, cosine, etc., can be combined to generate any mathematical equation we can think of.
特别地，能得到α角的余弦值，我们知道如何找两向量的夹角。
In particular,cosine of alpha,I can get, well, we know how to find the angle between two vectors.
我是一名统计学家，“余弦学者”，如果你觉得这个表达有趣的话。
I am a statistician, a "cosine academic," should you find the expression amusing.
了解如何通过增加正弦和余弦来制造各种不同形状的波。
Learn how to make waves of all different shapes by adding up sines or cosines.
例如，清单3展示了一个样式表，它生成角度的正弦、余弦和正切值。
For example, Listing 3 shows a stylesheet that generates sines, cosines, and tangents for the angles.
本文介绍了余弦窗函数，并将其应用到平面波综合技术中。
The cosine window function is introduced and applied in the plane wave synthesis technique.
本文提出方向余弦矩阵正交化的一种新方法——解析正交化。
This paper presents a new method named "Analytic Orthogonalization", for orthogonalizing direction cosine matrix.
而太阳高度角较低时此值的变化，主要由仪器的余弦响应所引起。
The variation at the lower solar elevation is caused by the cosine response of the instrument.
本文提出了一种离散余弦变换电路VLSI实现的可测试性设计。
In this paper, a VLSI implementation method of design-for-testability for DCT is presented.
一个数学函数，返回指定表达式中以弧度表示的指定角的三角余弦。
Is a mathematical function that returns the trigonometric cosine of the specified Angle, in radians, in the specified expression.
好的，让我们试着把等式，带入正弦函数，或者余弦数来做，你喜欢哪个都行。
All right. Let's try to substitute in that equation a sinusoid's or a cosine solution, whichever one you prefer.
这种方法有节制的信号分解成一系列的波形正弦和余弦的组成部分。
This method decomposes a measured signals waveform into a series of sine and cosine components.
确定顶点法线与重新计算顶点后得到的光照法线之间的角度的余弦。
Find the cosine of the Angle between the vertex normal and the newly calculated vertex to light normal.
结果表明该滤波器的透射光谱是余弦函数调制后的光纤光栅反射光谱。
It was found that the transmission spectrum of the filter is the cosine function modulated reflection spectrum of the fiber grating.
下面是简单说明的multiplot，它绘制正弦、余弦及其各自倒数的曲线图。
Here is a simple annotated multiplot that plots the sine, cosine, and their respective reciprocals.
双曲正弦、双曲余弦和双曲正切函数也会以常见或特殊形式出现在各种计算中。
The sinh, cosh, and tanh functions also all appear in various calculations in special and general relativity.
利用余弦型的复合光栅作为滤波器，在相干光处理系统中可对图像进行微商。
Pattern differentiation can be performed in a coherent Optical processing system if a composite sinusoidal grating is used as a filter.
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