若过
两点的直线的倾斜角为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3218d4e7ae068f2a2be3c0d74e8903a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/601e2ef35c31e69cf2ffc4c2d9663aa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2022-10-27 10:36:15
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【推荐1】过点
的直线l与圆x2+y2=1有公共点,则直线l的倾斜角α的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc207b7db91ffb659b1095bdd21592a0.png)
A.0°<α≤30° | B.0°<α≤60° |
C.0°≤α≤30° | D.0°≤α≤60° |
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【推荐2】已知
,直线
的斜率是直线
斜率的
倍,则直线
的倾斜角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/544d6ed5236d518a0992ae748a9928c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.30° | B.45° | C.60° | D.90° |
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【推荐1】关于直线的倾斜角和斜率,有下列说法:
①两直线的倾斜角相等,它们的斜率也相等;
②平行于x轴的直线的倾斜角为
或
;
③若直线过点
与
,则该直线的斜率为
.
其中正确说法的个数为( )
①两直线的倾斜角相等,它们的斜率也相等;
②平行于x轴的直线的倾斜角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9fe18dd76c139276b8e7dedca41fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9d224009c445d6a65086f7ccf9c726.png)
③若直线过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9ed598e64da6f04c189c3dc41e2284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52db68b8db7fc18b9a93541ad62086ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a3af8ffa3257752d234264406db10e.png)
其中正确说法的个数为( )
A.3 | B.2 | C.1 | D.0 |
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【推荐2】直线
经过
,
两点,则直线
的倾斜角是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc83347d419c0aae5b61c14f4164bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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