本文旨在研究角度测量的单位，包括它们的历史、定义和它们之间的转换，详细叙述了几种常用的单位类型，其中最重要的两种是度和弧度。此外，如何在一个具体的情况选择合适的单位进行角度测量。
角度测量是数学中最基本的概念之一，在几何、三角、代数等许多数学分支中有着广泛的应用，在地理学、天文学和生物学等领域也有着广泛的应用。在使用角度测量之前，必须了解测量角度大小的单位和不同类型单元之间换算的不同。这是本报告的主要目的。
在几何学中，角是平面上两条射线形成的图形。这两个射线，称为角的侧面，有一个共同的端点，这被称为角的顶点。一个光线通过围绕顶点旋转而与另一个射线相重合，最小的旋转量被定义为一个角度的大小。
图1显示了三个角度。当旋转和平移两个射线同时保持旋转不变时，（a）和（b）两个角是全等角，另外，两边的长度对角度的大小没有影响。直观地说，（c）中的旋转量大于（a）和（b）中的旋转量。但这是不足够的数学。为了比较两个角度定量的大小，有必要首先确定角的度量单位。换句话说，在比较之前，必须在同一单位内测量两个角度。
角度测量作为一种基本的数学概念，在许多领域得到了广泛的应用。掌握每个单元的定义和历史，以及它们的转换是很重要的。在实践中，用户应该为特定任务选择最合适的角度度量单位。
悉尼Scienceassignment代写:角度测量单位简介
This report aims to research the units for angle measure, including their history, their definitions and the conversion between them.Several common types of units are described in detail, the two most important of which are degree and radian. In addition, how to choose the right unitfor angle measure in a specific situation is also discussed.
Angle measure is one of the most basic concepts in mathematics and has been widely used in many mathematical branches, such as geometry, trigonometry, algebra, etc. It’s also used in other fields, such as geography,astronomy and biology. Before using angle measure, it’s necessary to understand the difference of units that measure the size of an angle and the conversion between different types of units. That’s the main purpose of this report.
In geometry, an angle is the figure formed by two rays in a plane. The two rays, called the sides of the angle, share a common endpoint, which are called the vertex of the angle. One ray can coincide with the other by rotating around the vertex, and the minimal required amount of rotation is defined as the size of an angle.
Figure 1 shows three angles. As rotating and translating the two rays simultaneously keep the amount of rotation unchanged, the two angles in (a) and (b) are congruent angles.In addition, the length of the sides has no effect on the size of the angle. Intuitively, the amount of rotation in (c) is larger than those in (a) and (b). But that’s not enough in mathematics.In order to compare the size of two angles quantitatively, it’s necessary tofirstly determine the unit for angle measure. In other words, two angles must be measured in the same unit before being compared.
There are many types of units of angle measure, such as degree, radians and turn.Behind each unit, thereis a long story. Mastering each unit’s story contributes to a better use of angle measure in practice.
As a basic mathematical concept, angle measure has been widely used in many fields. It’s important to master each unit’s definition and history, and their conversion. In practice, the user should select the most appropriate unit for angle measure for the specific task.
