求空间的角和距离问题,是高考的常考题型,用传统综合法来解,多数学生由于作不出辅助线而搁浅,用向量法来解,虽然可能运算量较大,但推算程序易于掌握,因此,加强此法的复习训练,将会突破此重难点。把空间角转化为直线的方向向量和平面的法向量的夹角来求, The problem of finding the angle and distance of space is an examination question type of the college entrance examination. Using the traditional synthesis method to solve, most students ran aground because they could not make auxiliary lines. Using the vector method to solve it may be computationally intensive but the calculation procedure is easy. Mastering, therefore, strengthening the review training of this law will overcome this difficulty. Find the angle between the space vector converted into a straight line and the normal vector of the plane.