如图,
的顶点O在坐标原点,OA边在x轴上,
,
,把
绕点A按顺时针方向旋转到
,旋转角为60o,则在旋转过程中线段OC扫过部分
阴影部分
的面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd595151c04cf8a11eb029636e32ea7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d9af51b4ea3bce026f0ecce64f5afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb2633bb7cec1322710ec5a0764cc3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd595151c04cf8a11eb029636e32ea7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42098469c94a79b1501588728ae7bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/2020/2/6/2400253780000768/2433317368504320/STEM/e6d99cb0ff584f528a8084923b22880d.png?resizew=111)
更新时间:2020-04-10 14:46:53
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【知识点】 求图形旋转后扫过的面积
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适中
(0.65)
【推荐1】如图,
中,
长为
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.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3322a2ad9a95bdc9fc576a7a158d4d.png)
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适中
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【推荐2】如图,电线杆的顶上有一盏高为6 m的路灯,电线杆底部为A,身高1.5 m的男孩站在与点A相距6 m的点B处.若男孩以6 m为半径绕电线杆走一圈,则他在路灯下的影子BC扫过的面积为___ m2.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/65179ff7-01f0-4591-9c30-23644ea64d29.png?resizew=183)
您最近一年使用:0次