如图.小正六边形沿着大正六边形的边按顺时针方向滚动,小正六边形的边长是大正六边形的边长的一半.如果小正六边形沿着大正六边形的边滚动一周后返回出发时的位置,在这个过程中,向量
围绕着点
旋转了
角,其中
为小正六边形的中心,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48cc25a4c82cc1f86178fb13a8b50b24.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48cc25a4c82cc1f86178fb13a8b50b24.png)
![](https://img.xkw.com/dksih/QBM/2015/6/29/1572152045453312/1572152050819072/STEM/2e41b9e547e04bc8bcc192f248ae331c.png?resizew=452)
13-14高一下·江西九江·期中 查看更多[3]
更新时间:2016-12-03 01:29:15
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