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2024高三·全国·专题练习 查看更多[1]
(已下线)【讲】专题4 解三角形的范围(最值)问题(压轴小题)
更新时间:2024-05-19 17:00:44
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(0.65)
解题方法
【推荐1】已知圆锥
的顶点和底面均在半径为
的球面上,当圆锥侧面积最大时,圆锥底面半径与球的半径比值为______ ,圆锥的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a8c34f622f1b979feed5ae6ae5d0e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
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解题方法
【推荐2】在平面直角坐标
中,已知
,
,
是圆
上的两个动点,满足
,则
面积的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acdd42c47777468334fe4487430fdfa4.png)
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解题方法
【推荐1】若
为锐角三角形,且
,
,则边长
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1466856bf2570685d3629c1f813748.png)
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【推荐2】在
中,角A,B,C所对的边分别为a,b,c,已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facd1fcfad659e95da18c38e5eb157b8.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab839d8569171afab5ed55c22013aa72.png)
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解题方法
【推荐1】设
的内角
的对边分别为
,若
,
,
,则
的面积为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
【推荐2】已知
、
、
是锐角△
内角
、
、
的对边,
是△
的面积,若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1770a6b2e582eac3362014b8bcb2dfe0.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dd76300935900e29cd7b5ac0dd450c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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