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在△ABC中,成立着不等式,这是同学们熟知的。本文应用三角形内角平分线的长与高的关系,给出这个不等式的一个新颖、简捷的证法,供参考。
In ABC, inequality is established. This is well known to students. This paper applies the relationship between the length and height of the bisector of the triangle internal angle, and gives a novel and simple proof of this inequality for reference.