两角差的正切公式的几何证明
2020-04-10 01:54
本 GeoGebra 范例通过几何作图直观地证明了两角差的正切公式。利用圆、射线、垂线及多边形等几何对象，构造出包含两个角及其差角的几何模型。用户可以通过观察线段长度的比例关系，深入理解三角函数中两角差正切公式的几何意义与推导过程，是学习三角恒等变换的优秀可视化辅助工具。
所属专题
中职数学GeoGebra互动教学资源库
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<caption val="$\Huge 1$"/>
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</construction>
</geogebra>