自从引入空间向量后,立体几何中空间角、空间距离的计算用向量法就变得简单多了,向量法须先求某些向量、法向量的坐标,向量、法向量常常涉及点的坐标,但有些点的坐标由于种种原因并不易求,导致整题解不出来,甚为可惜,本文就以解答题为例谈谈求解空间点坐标易错点,以助同学们备考.1.不够大胆设两个参数在利用向量法求空间角或者距离时,若某个边长关系不是直接告知而是以其他形式体现,常常设一个参数,列出方程解出参 Since the introduction of space vector, the calculation of space angle and space distance in the solid geometry becomes much simpler by vector method. The vector method needs to find some vectors first. The coordinates, vectors and normal vectors of the normal vector often involve the coordinates of points, However, the coordinates of some points are not easy to find due to various reasons, which leads to the problem can not be solved. It is a pity that this article will take the solution to the problem as an example to solve the problem of space point coordinate error-prone points to help students prepare for the test. Two parameters in the use of vector method to find the space angle or distance, if a side length relationship is not directly inform but in other forms, often set a parameter, list the equation solution to the Senate