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随着新教材的推广使用,利用向量的模和夹角求空间的线段长和两直线的夹角,利用向量的数量积来求空间的线与线之间的来角和距离,线与面、面与面之间所成的角和距离,已成为新高考命题的一个热点.
With the promotion of new textbooks, use the vector’s modulus and angle to find the length of the space segment and the angle between the two lines, and use the product of vectors to find the angle and distance between the line and the line of the space. The angle and distance between face and face has become a hot spot for the new college entrance examination proposition.