You know, cosine is adjacent over hypotenuse.

道 cos是邻边除以斜边。

So this is equal to cosine of the angle.

cosθ于邻边/斜边。

And so this is going to be equal to what?

相对于这个角 这里是邻边/斜边？

I get it! Sin is opposite hypotenuse... Yes.

我懂了，正弦是对边比斜边。是。

So you have the opposite over the hypotenuse.

这里是对边比斜边。

Opposite over hypotenuse is equal to sine of an angle.

斜边分之对边 值即是 sin 函数值。

Arrange them so that their hypotenuses form a tilted square.

将它排列起来，使其斜边形成一个倾斜正方形。

Take four identical right triangles with side lengths a and b and hypotenuse length c.

取四个直角三角形，两边分别长 a 和 b，斜边长 c。

Root 2 simply is the hypotenuse of a right triangle

而 √2 只是两边长度为 1 直角三角形之斜边。

The most famous relation in geometry is the relation between the sides and the hypotenuse of a right triangle.

几何中最著名关系是直角三角形边和斜边之间关系。

What involves the hypotenuse and the opposite side?

什么涉及斜边和对边？

You know, I was blown away that the square of the hypotenuse was the sum of the squares of the opposite sides.

斜边平方于直角边平方和可把我给惊呆了。

So what involves the opposite and the hypotenuse?

那么什么涉及对立面和斜边呢？

Sine theta equals opposite over hypotenuse.

正弦θ于对边除以斜边。

Cosine theta equals adjacent over hypotenuse.

cosine theta 于相邻在斜边上。

They looked like real stones because of the way they were cut-flat with beveled edges.

它看起来像真正石头， 因为它被切割成带有斜边平整方式。

It's adjacent over hypotenuse. And that's square root of 3 over 2.

它在斜边上相邻。那是 3 除 2 平方根。

When you draw a vector, it's a lot like the HYPOTENUSE of a right angle triangle.

当画一个箭头时，它很像 直角三角形斜边。

For the fundamental with two fixed ends, we already know that the wavelength is twice the string's length.

对于主要两个固定侧，我有 我道波长是斜边长度两倍。

That states that the squares of the sides of a right triangle add up to the square of its hypotenuse.

这表明直角三角形各边平方加起来于其斜边平方。