1 . 直线
与圆
交于
两点,
为坐标原点,若直线
的倾斜角分别为
、
,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d032a86ee8abb3d8b9fb38a93d3f3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f25834d8218c53cb975c2a2fe7442a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46cbd8c9d6841ee3ded51e9c5e9b9018.png)
A.![]() | B.13 | C.17 | D.![]() |
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2 . 已知
,集合
,
,且
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052a2d819b3ded8da4420915a108faf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a570acd07719ab273a7172f971c2d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ad895aa13a5e87785524580a43f4cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f1ba0a1129741502600e47bf058c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
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2020-02-29更新
|
187次组卷
|
2卷引用:四川省雅安市天立教育集团2023-2024学年高二上学期期中数学试题
名校
3 . 已知直线y=x+b与单位圆x2+y²=1交于A,B两个不同点,设直线OA,OB的倾斜角分别是α,β,则cosα+cosβ的取值范围是___________ .
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4 . 已知函数
的图象关于直线
对称,当
时,
,设
,
,
,则
,
,
的大小关系为________ .(请用“<”连接)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c09c5c89b0c2a92f8c4b70e69b0eada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/685919280c5ae5a10d1047e56d3d5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2c338f07507c870b02b740c0b5e602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8da38ede1a5ba7f09dfafcbdbd9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c928bd9013bf6fe2dbeb75bfa332cc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f484115a9df1b6060d6b14df85c6f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35770a47ffcba6bf1d94eceabb416d96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee0882f5f575d9e0ae7677efbd41b38.png)
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