栏目导引,应用案,巩固提升,探究案,讲练互动,预习案,自主学习,第二章平面向量,6,平面向量数量积坐标表示,第二章平面向量,1/43,2/43,3/43,4/43,5/43,6/43,7/43,8/43,D,B,9/43,10/43,11/43,12/43,13/43,14/43,C,C,15/43,16/43,17/43,18/43,19/43,20/43,21/43,B,22/43,23/43,24/43,25/43,26/43,27/43,28/43,29/43,30/43,31/43,32/43,33/43,34/43,35/43,36/43,37/43,38/43,39/43,40/43,A,41/43,A,42/43,1,43/43,