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为适应高中数学教材改革的新情况 ,需要研究用向量方法求解立体几何的各种问题。本文以近几年的高考题为例 ,来讨论如何用向量方法解决立几求角的问题。立体几何中的求角问题 ,大致有三种类型 ,即 :求二异面直线的夹角 ;求两个平面的夹角———二面角的平面角 ;以及求直线与平?
In order to adapt to the new situation in the reform of high school mathematics textbooks, it is necessary to study various problems of using vector methods to solve the three-dimensional geometry. This article uses the college entrance examination questions in recent years as an example to discuss how to use the vector method to solve the problem of standing angles. Three-dimensional geometry of the angle problem, there are roughly three types, namely: seeking the angle of the two different surface straight line; find the angle between the two planes --- the planar angle of the dihedral angle; and find the straight line and the flat?