解题方法
1 . 已知直线l倾斜角的余弦值为
,且经过点
,则直线l的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71d141e18938319cc05063d29c111557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80991c1f0c963104740e50cfff6f29a8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 已知
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f06a002a861a5a11be6842fd075a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c1f914da4657eca7865982b130b299.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
3 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/054768e8727bc25eb2520b8a1bc301f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4fed22c36f1c0b5d5d27b27f9a059f7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
4 . 已知向量
,
,当
取得最大值时
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5d4af9e447f5437018b6b2067218a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a98d7596d36f19eacb8002244f8fcca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39d1d88189726ae99c309644fca3494.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
5 . 若
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c414f1528d2592c7b16d68bf8760da15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265bb797acf99bb79d859795b6295ede.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4619509e2dd50c52274dbede9b7f883.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
6 . 若
,
为锐角,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bc57e8e3936ac7ac048da5f39dfeb65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a83729ca600e7fc4e661705005e0c332.png)
A.![]() | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
7 . 已知
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6aacd7ee199596ae4d014efbdcacae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a688e944607e81ab20fb0b32a06d0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85527d190d4e1d6bac4145d1c716e65e.png)
A.![]() | B.![]() | C.7 | D.![]() |
您最近一年使用:0次
解题方法
8 . 已知
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754b57d166e17509b604a51195a85f51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a135466eb8ca64d002d0fad36176d1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 . 若
,
,则
是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c212f8f81feaa8e69a9f4a4a78d85140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a988a65a6f4e0252d47c08bfb83bfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.第一象限角 | B.第二象限角 |
C.第三象限角 | D.第四象限角 |
您最近一年使用:0次
解题方法
10 . 若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc19e792036ffc6d4d001d32f6ab6e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96baee807c43e1a7b7feacf142813e8b.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
您最近一年使用:0次