平面向量是高中数学中基础且重要的内容之一,然而学生却不易掌握.究其原因,一方面,平面向量是既有大小又有方向的量,是“数”与“形”的结合体,而学生对数形结合的数学思想不能灵活运用;另一方面,对平面向量知识的考察常常与三角函数、解三角形、解析几何等知识相结合,这就无疑提升了试题的难度.在平时练习中,我们常有这样的体 Plane vector is one of the basic and important content in high school mathematics, however, students are not easy to grasp. The reason, on the one hand, plane vector is both the size and direction of the amount of On the other hand, the inspection of plane vector knowledge is often combined with trigonometric functions, solving triangles, analytic geometry and other knowledge, which undoubtedly enhances the test questions In normal practice, we often have such a body