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直线和平面所成的角,是空间三大角之一.概念本身并不复杂,但深刻理解并不容易.为此本文对它进行解读,供读者参考.一、关于直线和平面所成角的定义直线与平面所成的角,分三种情况定义:(1)直线与平面斜交时,直线与平面所成的角是指这条直线和它在平面内的射影的夹角;(2)直线与平面垂直时,直线与平面所成的角是直角;(3)直线与平面平行或在平面内时,直线
The angle formed by the straight line and the plane is one of the three major corners of the space. The concept itself is not complicated, but it is not easy to understand it profoundly. For this reason, this article interprets it for readers’ reference. Define the angle formed by the line and the plane, defined in three situations: (1) The angle formed by the line and the plane when the line and plane are skewed is the angle between this line and its projective plane; (2) ) When the straight line is perpendicular to the plane, the angle between the straight line and the plane is a right angle. (3) When the straight line is parallel to the plane or in the plane, the straight line