Notice the cosine function is...

注意这个余弦函数的。

Let us plot both the sine and the cosine curves.

假设我们同时绘制正弦和余弦曲线。

That is why the area gets shrunk by cosine alpha.

这就是为什么面积缩小了cosα倍。

A So I get zero equals A times the cosine of phi.

我得到0等于,乘以cosφ

But, we have the constraint, a equals b cosine theta.

但是我们有约束条件，a=b*cosθ

It is not very convenient to have a cosine left in here.

在这里留一个cos并不是很方便。

The title can be abbreviated to t, as we do for the cosine curve.

title可以缩写为t，正如我们对余弦曲线的设置。

Above, we plotted both the sine and cosine on the same graph.

上面，我们在同一图中绘制了正弦和余弦曲线。

Returns the hyperbolic cosine of a number! Is any real number !

计算数值的双曲余弦值。！任意实数。！

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。

Then cosine theorem is no longer a pure problem from elementary geometry.

于是余弦定理从此不再是一个纯粹的初等几何问题。

I am a statistician, a "cosine academic," should you find the expression amusing.

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。

Plus the potential energy, which is mg times R times one minus cosine theta.

加上势能，也就是mg乘以R乘以,1/cosθ

And, we can use that to measure angles between vectors by solving for cosine in this.

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。

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。

If now we want to know what f prime is, f v/c plus v over c times the cosine of theta.

若想知道f撇的大小，撇等于f乘以1，then，f，prime，equals，f，times，one,加上,乘以cosθ

In particular,cosine of alpha,I can get, well, we know how to find the angle between two vectors.

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。

Add, multiply, cosine, etc., can be combined to generate any mathematical equation we can think of.

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。

Well, what I can change is the direction, and this will be the largest when the cosine is one.

我可以改变的是方向，当cos=1时，这个可以取到最大。

Here is a simple annotated multiplot that plots the sine, cosine, and their respective reciprocals.

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。

Since there is no acceleration in the y direction, the normal force must be also mg cosine theta.

既然在y方向上,没有加速度，法向力也等于mgcosθ

So, whenever I see dx, I will replace it by, well, -sin the derivative of cosine is negative sine.

当我看到dx，就把它替换成cos的导数，也就是。

Then this is the component in your direction we call that the radial component which is v cosine theta.

这是y方向的，组成因素,我们称之为辐射组成,等于vcosθ

All right. Let's try to substitute in that equation a sinusoid's or a cosine solution, whichever one you prefer.

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。

The mathematic model of concentricity error and a advanced optimal method - "cosine shift plus" are put forward.

提出了同轴度误差的数学模型，其中给出一种高效的优化方法一余弦移位相加法。

This is a constant, and so you're going max to get theta equals theta maximum times the cosine omega t plus phi.

这是不变的,所以得到θ=θ,乘以cosωt+π

I am going to decompose them, so I have one component here and this component equals mg times the cosine of alpha.

分解重力，这里得到一个分量,这个分量等于mgcosα

If you go to an infinite cylinder it has a vessel function. And if you go to an infinite slab it has a cosine type shape.

如果是一个无限的圆柱，它有，管道功能，如果是一个无限的平板，它有余弦的形状。

So it is this component, v cosine theta - which we call the radial velocity-- that is minus 100 kilometers per second.

这个成分，是vcosθ,我们叫做径向速度-,等于-100，公里每秒。

Is a mathematical function that returns the trigonometric cosine of the specified Angle, in radians, in the specified expression.

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。