名校
解题方法
1 . 如图,S为圆锥顶点,O是圆锥底面圆的圆心,AB、CD为底面圆的两条直径,
,且
,
,P为SB的中点.
平面PCD;
(2)求圆锥SO的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38a5ed40e239098309bb3c9a5ad28489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cea06e3edaaef607d8b78ecf4090d07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8825d400f453c5c17a7beeb1cc9a9cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ea0adc03fc8ba355dbdac586f4b707.png)
(2)求圆锥SO的体积.
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2023-08-02更新
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2396次组卷
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5卷引用:陕西省渭南市富平县2020-2021学年高一上学期期末数学试题
陕西省渭南市富平县2020-2021学年高一上学期期末数学试题贵州省遵义市南白中学2023-2024学年高二上学期第一次联考数学试题新疆阿拉山口市中学2023-2024学年高二上学期开学考试数学试题广东省普通高中2024届高三合格性考试模拟冲刺数学试题(二)(已下线)第13章 立体几何初步 单元综合检测(重难点)-《重难点题型·高分突破》(苏教版2019必修第二册)
2 . 如图,在
中,
,斜边
,现将
绕AC旋转一周得到一个圆锥,BD为底面圆的直径,点P为圆锥的内切球O与CD的切点,
为圆锥底面圆周上异于B,D的一点.
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899096901861376/2909066567385088/STEM/1d4def76-13cf-4a3e-b978-c387907a7275.png?resizew=259)
(1)求证:
平面
;
(2)当
时,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564e238659b316ab3275829470ce0c89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899096901861376/2909066567385088/STEM/1d4def76-13cf-4a3e-b978-c387907a7275.png?resizew=259)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113c87d7b997847259f17ee8576ee44c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/295aced98768ce261e00fe6660a427a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9655de237e97442f6920fad144b2d85b.png)
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名校
解题方法
3 . 圆锥的顶点为
,底面圆心为
,线段
是圆
的直径,点
是圆
上异于
、
的点,
垂直于圆
所在的平面,且
,
.
(1)若
为线段
中点,求证:
平面
;
(2)求圆锥的侧面积,并求三棱锥
体积的最大值;
(3)当三棱锥
体积最大时,点
沿圆锥表面运动到母线
中点
,求该点经过的路线的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9b5996067a3fc9adcf0ca178dddf03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c80b508a551c7e67587eaf6eaae2df.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdac31e82ed00eace31e8c075c97bb2.png)
(2)求圆锥的侧面积,并求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
(3)当三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
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