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1 . 如图,21个相同的正方形相接,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656187cb339306dc30333c58ab42a8c4.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656187cb339306dc30333c58ab42a8c4.png)
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2 . 在
中,角
的对边分别为
,已知
,则
的面积为( )
![](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/0ecd7ae207b671c34993231d1718ab74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6be9e5e920df76da0792ecf382fb4266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b3a74bec89aa74fc75261f53d2aec6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-05更新
|
1830次组卷
|
4卷引用:江西省南昌市第十九中学2024届高三下学期第五次模拟考试数学试卷
江西省南昌市第十九中学2024届高三下学期第五次模拟考试数学试卷江苏省南通、扬州、泰州七市2024届高三第三次调研测试数学试题(已下线)期末押题卷02(考试范围:苏教版2019必修第二册)-【帮课堂】(苏教版2019必修第二册)(已下线)专题02 三角恒等变换题型归纳-《期末真题分类汇编》(江苏专用)
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解题方法
4 . 球面三角学是研究球面三角形的边、角关系的一门学科.如图,球
的半径为R,A,B,
为球面上三点,劣弧BC的弧长记为
,设
表示以
为圆心,且过B,C的圆,同理,圆
的劣弧
的弧长分别记为
,曲面
(阴影部分)叫做曲面三角形,
,则称其为曲面等边三角形,线段OA,OB,OC与曲面
围成的封闭几何体叫做球面三棱锥,记为球面
.设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360d08a80e1786ee3cf7cfee9f2a65b2.png)
,则下列结论正确的是( )
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7874b563ba2f6954d767ef8d14942f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72138616782e9bdc1be790a1d582fcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881068127a39caf319492b4177204f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44acc0ee22dc4b7750e8be825e7c1355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360d08a80e1786ee3cf7cfee9f2a65b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
A.若平面![]() ![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.若平面![]() ![]() ![]() |
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5 . 已知钝角
的面积为
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3e2d62c9da96d2c059683f92114365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350a8ad21109ac0a2f3c814b31cf0e2f.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
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解题方法
6 . 在
中,内角
所对的边分别为
,其外接圆的半径为
,且
.
(1)求角
;
(2)若
的角平分线交
于点
,点
在线段
上,
,求
的面积.
![](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/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a17faf90bb5569dab60d277d111cb51.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e14d71667c64ab37596ff76207c7a82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4fab6d048598da04733fafe7c114d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
您最近一年使用:0次
2024-06-03更新
|
1881次组卷
|
3卷引用:江西省重点中学协作体2024届高三第二次联考数学试卷
名校
解题方法
7 . 在
中,
,
,
,则点A到边
的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5db6a34d668638ea121fd60a570a0ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-06-03更新
|
613次组卷
|
4卷引用:江西省部分学校2024届高三下学期5月月考数学试题
名校
解题方法
8 . 如图,将边长为1的正
以边
为轴逆时针翻转
弧度得到
,其中
,构成一个三棱锥
.若该三棱锥的外接球半径不超过
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c430808cb91d66ce60b1e2f83f129db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/476c1028ab48d8f3779e1217b8bf63d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45bc09ca07b357a1ecf0c9588aa7030e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5f1b9a7dc93aa2cd57d6352d000bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
9 . 在
中,内角
所对的边分别为
,
是
的中点,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c85a51a5614f436d0ca75a0ac7b877c.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb498a2ccf4aa58356cde3129a885a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c85a51a5614f436d0ca75a0ac7b877c.png)
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10 . 已知函数
的图象关于点
中心对称,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ccd893936fa681961709a1500b8a105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac7c28099bfbb7dc2a45ad166eace05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85296a42aa27970edad808422bdb664b.png)
A.3或![]() | B.2或![]() | C.![]() ![]() | D.![]() ![]() |
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