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可在安卓获取Trigonometry Calculator的历史版本
三角是从简单的测定法开发数学的一个分支。
Trigonometry is a branch of mathematics that developed from simple mensuration (measurement of geometric quantities), geometry, and surveying. In its modern form it makes use of concepts from algebra and analysis. Initially it involved the mathematics of practical problems, such as construction and land measurement; it has since been extended to the geometry of three-dimensional spaces in the form of SPHERICAL TRIGONOMETRY. This article, however, will deal only with plane trigonometry.
Land survey makes use of the process of triangulation, in which a chosen network of triangles is measured. In pure triangulation, a base line to one triangle is measured, and the rest of the survey involves measuring angles only; in mixed triangulation, certain sides and angles are measured; in chain triangulation, only sides are measured.
Last updated on 2016年09月03日
Minor bug fixes and improvements. Install or update to the newest version to check it out!
Trigonometry Calculator
1.0.2 by Adamas Tech
2016年09月03日