名校
1 .
的内角
的对边分别为
,已知
.
(1)求
;
(2)若
,且
,
是
上的点,
平分
,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/40b5233efc572c4a07371de14b340761.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cc7563043c2607606e37b80e14b5426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6129fbf40a950fc8c516f0abaab21957.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
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2019-08-02更新
|
1331次组卷
|
3卷引用:云南省昆明市2018-2019学年高二下学期期末考试数学(理)试题
名校
2 . 设集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ecfa5aeaf5388f8780b0f960d330ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-08-23更新
|
1180次组卷
|
7卷引用:云南省昆明市2018-2019学年高二下学期期末考试数学(文)试题
3 . 在平面直角坐标系
中,过点
的直线与圆
交于
两点,当
的面积最大时,线段
的长度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4bbf7acc38d391682378a7509dc04d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/398a1bc39987b757434125394ab7487a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 设随机变量
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54400e19e54880e1d41545788094cb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff78b14836888641c133e1a2fcc4cf45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac87b4bd71432d757c7b78bbd6b2dcfd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 直线
被圆C:
所截的弦长的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0465ced730a81aa95dabe559fa7269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54329a84abb204cecb237b2bf2ff2bb7.png)
A.![]() | B.6 | C.![]() | D.8 |
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6 . 已知向量![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff182df5607e90450d212afd997b7523.png)
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff182df5607e90450d212afd997b7523.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4ef9f7f62c00bf7d33d53872472c35f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b988d81f63ca329c85840e030f6505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-08-23更新
|
749次组卷
|
2卷引用:云南省昆明市2018-2019学年高二下学期期末考试数学(理)试题
7 . 如图,在四棱锥
中,
平面
,底面
是菱形,
,
,
,
分别是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/2c3ae9c9-ad07-48d8-b6a2-648bae048570.png?resizew=208)
(1)证明:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb8fb552b9e21dbaba74d11aa747790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6184f3b929dda3c1b3b35b9aec448118.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47891397990336f55f96bd66d367758b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/2c3ae9c9-ad07-48d8-b6a2-648bae048570.png?resizew=208)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/053af8641980763a7f0e77beefe0712d.png)
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名校
8 . 已知双曲线
,则
的渐近线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ee700ae61a7ca6dd3881ed05ea34d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2019-08-23更新
|
647次组卷
|
4卷引用:云南省昆明市2018-2019学年高二下学期期末考试数学(文)试题
9 . 过原点的直线l与圆
相交所得的弦长为
,则直线l的斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c36518ec2ebf9f2ac07e808ebb08d4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb57575dea540c569265de158429425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.2 | B.1 | C.![]() | D.![]() |
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10 . 函数
的图象在点
处的切线方程为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d68a1bf675a2fd319cbf6590bb4abb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81158db42116f74e7b26e100f88dd535.png)
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