题文
在边长为1的正三角形ABC中,设
,则

=( )。 题型:未知 难度:其他题型
答案

解析
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考点
据考高分专家说,试题“在边长为1的正三角形ABC中.....”主要考查你对 [向量数量积的运算 ]考点的理解。
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