解题方法
1 . 记△ABC的内角A,B,C的对边分别为a,b,c,已知
,
,则△ABC的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d95cc93b109f5d8198f1c7b86835d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/917177a540b592eeeb25174ef26db6a1.png)
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2 . 在三棱锥
中,
面
,则三棱锥
的外接球的表面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5444bf15e722f7a07eb828a9abbe8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
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3 . 某冰淇淋门面店将上半部是半球(半球的半径为3),下半部是倒立的圆锥(圆锥的高为6)的冰淇淋模型放到椐窗内展览,托盘是边长为12的等边三角形ABC金属片沿三边中点D,E,F的连线向上折叠成直二面角而成,则半球面上的最高点到平面DEF的距离为__________ .
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解题方法
4 .
中,角
的对边分别是a、b、c,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448ba6bd4409bd26cca62a7450fb8543.png)
,则
的形状是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448ba6bd4409bd26cca62a7450fb8543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5195839c05d101b83c0bc4e9a200b3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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5 . 在
中,内角
所对的边分别为
,若
成等比数列,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
_______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df23cc36e6d0a1f5bfc6b7a1cde0d4b5.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb926a5338553390e23eab672d8e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df23cc36e6d0a1f5bfc6b7a1cde0d4b5.png)
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2024-04-07更新
|
1179次组卷
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4卷引用:贵州省安顺市部分学校2024届高三下学期二模考试数学试题
6 . 在
中,
,则
外接圆的半径为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d38d4b32f0d758e92322d9ee880d1d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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7 . 在
中,若
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c12ce6901e15919b9e1825c4f2f8f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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8 . 在
中,已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0cb1277e88aa3ebc505105631b22326.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958b7b27a401f6b8352ae36e6e26d01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623e1f0323a54b102ddd0a51ea4b3df1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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2卷引用:贵州省贵阳市北京师范大学贵阳附属中学2022-2023学年高一下学期第二次月考数学试题
9 . 在
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e45e299cd5f981c7edc8346b79c82a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
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10 . 在
中,角A,B,C所对的边分别为a,b,c,且
的外接圆半径为
,若
,则
的周长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/278d85cb534b3b785f05b37c9cf7f34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2023-12-11更新
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3卷引用:贵州省黔东南自治州镇远县文德民族中学校2022届高三上学期期末数学(理)试题
贵州省黔东南自治州镇远县文德民族中学校2022届高三上学期期末数学(理)试题贵州省黔东南自治州镇远县文德民族中学校2022届高三上学期期末数学(文)试题(已下线)6.4.3 第2课时 正弦定理【第三练】“上好三节课,做好三套题“高中数学素养晋级之路