题文
若非零向量
、

,满足

,

,则

. 题型:未知 难度:其他题型
答案

.
解析
∵

,∴

,
又∵

,∴

,∴

.
考点
据考高分专家说,试题“若非零向量、,满足,,则......”主要考查你对 [向量数量积的含义及几何意义 ]考点的理解。
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