导言:基本三角三角三角三角三角三角测量

Today, anyone with a cell phone knows that with the GPS functionality of the phone, they can reasonably be located at any point on Earth. Part of this technology is the mathematical process of triangulation. One way to understand triangulation is as a method of surveying. Surveyors mark points on the ground at the vertices of several triangles.
::今天,任何拥有手机的人都知道,只要有手机的全球定位系统功能,他们就可以合理地定位在地球上的任何地方。这种技术的一部分是三角测量的数学过程。一种理解三角测量的方法是作为一种测量方法。测量员在几个三角形的顶端的地面上标记点。

The angles of the triangles are measured instrumentally, and the sides are derived by computation. The lengths of the sides of those triangles are distances between geographic points that cannot be measured directly. Even distances in space can be measured using these techniques. Cell phones are easily located by calculating their distances from nearby cell phone towers. In this chapter, we will explore the mathematical definitions and tools used to calculate these distances.
::三角形的角度是用工具测量的, 边靠计算得出。 这些三角形的侧边是无法直接测量的地理点之间的距离。 即使用这些技术也可以测量空间的距离。 手机很容易通过计算距离附近手机塔的距离来定位。 在本章中, 我们将探索用于计算这些距离的数学定义和工具 。