名校
1 . 已知
分别为双曲线
的左、右焦点,点
在双曲线
上,
为
的内心,点
满足
,若
且
,记
的外接圆半径为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/176569a223942b06f78d81633e2467b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1995e86f33384dce8e888854077a665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a27a61c93f2b57cb09d0003b2a9656a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2915bc7d51d743dd631c2e7cb4b16601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
A.![]() | B.![]() | C.![]() | D.1 |
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2卷引用:四川省成都市第七中学2021-2022学年高二上学期期中数学理科试题
名校
2 . 在
中,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1741d486796fe604cef5b7f6486459e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c5cd6ce30ac70cd343334139c1a478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f774cd650f14c8f6e4fe0c6a432768bb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6卷引用:湖南省长沙市第二十一中学2021-2022学年高一上学期期中数学试题
湖南省长沙市第二十一中学2021-2022学年高一上学期期中数学试题北京市顺义区2021届高三上学期期末考试数学试题(已下线)专题02 三角恒等变换与解三角形-备战2021届高考数学(理)二轮复习题型专练?(通用版)(已下线)专题02 三角恒等变换与解三角形-备战2021届高考数学(文)二轮复习题型专练?(通用版)(已下线)专题9.1正弦定理与余弦定理(A卷基础篇)-2020-2021学年高一数学必修第四册同步单元AB卷(新教材人教B版)(已下线)6.4.3余弦定理、正弦定理(第1课时)(练案)-2021-2022学年高一数学同步备课 (人教A版2019 必修第二册)
名校
3 . 在
中,
是角
的平分线,
,且
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e39d0f4ab0ff34e779f360cb9d8e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2卷引用:河南省湘豫名校联盟2021-2022学年高三上学期期中考试(文科)数学试题
4 . 在平面凸四边形
中,
,
,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d556e72cd36fcaa9b04ce1552a8068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac7036aa06c1d8c224f4a90647d4d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffff38ea8b2d25cc4388774f1fdecbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
A.![]() | B.3 | C.![]() | D.![]() |
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2卷引用:河南省焦作市普通高中2021-2022学年高二上学期期中考试文科数学试题
5 . 三棱柱
中,底面边长和侧棱长都相等,
,则异面直线
与
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844851461701632/2846807741407232/STEM/c950adad-3a12-44e9-97af-3980cb82d8c8.png?resizew=203)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6eb2c0c1b3f47e344a4d0c49286a0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844851461701632/2846807741407232/STEM/c950adad-3a12-44e9-97af-3980cb82d8c8.png?resizew=203)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:湖北省荆州市沙市中学2021-2022学年高二上学期期中数学试题
湖北省荆州市沙市中学2021-2022学年高二上学期期中数学试题(已下线)8.4 空间点、直线、平面之间的位置关系(精讲)-2021-2022学年高一数学一隅三反系列(人教A版2019必修第二册)河南省南阳市第一中学校2023届高三上学期第三次阶段性测试文科数学试题(已下线)专题04 立体几何初步(1)-【常考压轴题】
名校
解题方法
6 . 已知正三棱锥
中,
,E是
的中点,则异面直线
与
所成角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983a45a4ef187b9cb0682d59a9dcfeaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
A.30° | B.45° | C.60° | D.90° |
您最近一年使用:0次
名校
7 . 在
中,
,
,
,则
是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae8221601c7bd5c51fd520615581fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6f36b68775caf523d33948e1ac1371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.锐角三角形 | B.钝角三角形 |
C.直角三角形 | D.等腰三角形 |
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2卷引用:河南省焦作市普通高中2021-2022学年高二上学期期中数学理科试题
名校
解题方法
8 . 在
中,内角
所对的边为
,若
,
,
,则
( )
![](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/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf623a808eaaef1acef2bd44d92d34a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80987f45680998680357b8486e8ed52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5卷引用:陕西省西安市长安区第一中学2022-2023学年高二上学期期中文科数学试题
9 . 如图,在
中,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/bbe8c6d3-b628-449a-9600-b056a679b976.png?resizew=225)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2f464ab691a2a3df40a5b2a2edeb0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/bbe8c6d3-b628-449a-9600-b056a679b976.png?resizew=225)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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5卷引用:甘肃省张掖市民乐县第一中学2021-2022学年高二上学期期中数学文科试题
甘肃省张掖市民乐县第一中学2021-2022学年高二上学期期中数学文科试题浙江省2022届高考模拟卷数学试题(四)山东省枣庄市滕州市第五中学2021-2022学年高一下学期3月月考数学试题山东省临沂第一中学2021-2022学年高一下学期第二次教学检测(线上)数学试题(已下线)解密06 解三角形(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(浙江专用)
10 . “大玉米”是郑州新地标,被称为“中原第一高楼”,也被称为是世界上一座独一无二的标志性建筑.它是圆柱塔式建筑,夜晚其布景灯采用黄色设计,外形宛如一根“大玉米”.某人在地面上点
测得塔底
在南偏西
,楼顶
的仰角为
,此人沿南偏东
方向前进
到点
,测得楼顶
的仰角为
,按照此人的测量进行估算,则“大玉米”的高约为( )(参考数据:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fbec5f6d5c17cead615797fd68bba01.png)
![](https://img.xkw.com/dksih/PilotRun/2019/10/9/2308152996413440/2314881509146624/EXPLANATION/5f1186ec265e46458a17eebc774bcc34.png?resizew=115)
![](https://img.xkw.com/dksih/QBM/2021/11/4/2844201360703488/2845232520716288/STEM/24742841-d298-4fba-8fbd-976c84ef5c70.png?resizew=246)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16aa0b9869db50a9ab48cc32925d8e96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb94bd9eb80fb9f5f02f518bb8f2211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925524dfe99596c1aab5f8139ebf6a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fbec5f6d5c17cead615797fd68bba01.png)
![](https://img.xkw.com/dksih/PilotRun/2019/10/9/2308152996413440/2314881509146624/EXPLANATION/5f1186ec265e46458a17eebc774bcc34.png?resizew=115)
![](https://img.xkw.com/dksih/QBM/2021/11/4/2844201360703488/2845232520716288/STEM/24742841-d298-4fba-8fbd-976c84ef5c70.png?resizew=246)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:河南省实验中学2021-2022学年高二上学期期中数学(文)试题