名校
1 . 已知两个非零向量
,
的夹角为60°,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e8793bae3414603f06da7b301008e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/917522ba4f141e53a3bd4ef8bf9a59ec.png)
A.![]() | B.![]() | C.![]() | D.3 |
您最近一年使用:0次
2022-11-10更新
|
794次组卷
|
2卷引用:四川省江油中学2022-2023学年高三上学期第三次阶段考试数学(理)试题
名校
解题方法
2 . 在△ABC中,内角A,B,C的对边分别为a,b,c,已知
,设D是BC边的中点,且△ABC的面积为
.则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0347ec7758b0080e8a62ae452e162c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a62463260ca0dce5c69e7fb0be5d22.png)
A.2 | B.![]() | C.-2 | D.![]() |
您最近一年使用:0次
2023-02-06更新
|
509次组卷
|
3卷引用:四川省攀枝花市2023届高三上学期第一次统一考试数学(理)试题
名校
解题方法
3 . 已知抛物线
的焦点为
,动点
在
上,圆
的半径为1,过点
的直线与圆
相切于点
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2f6860a258341d24a87038c61527fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc4b6a40c370f74b54befded692e3fc4.png)
A.7 | B.8 | C.9 | D.10 |
您最近一年使用:0次
2022-12-29更新
|
495次组卷
|
2卷引用:四川省成都市成都外国语学校2022-2023学年高三上学期期末数学文科试题
解题方法
4 . 已知向量
与向量
的夹角为60°,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/145a7e8f352fab613b773dc6639b508b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a4fe23b799a0777b2faebd77dd05bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd01707e8d32f277b83c007a5b15bd7.png)
A.20 | B.10 | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
5 . 已知向量
,
是两个单位向量,则“
为锐角”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7be4359335d6e4f961bf1913d47b904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2f4bce4a513c28ba445513148a7c18.png)
A.充分不必要条件 | B.必要不充分条件 | C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2022-12-26更新
|
472次组卷
|
2卷引用:四川省内江市威远中学校2022-2023学年高三下学期第一次月考数学(理)试题
名校
解题方法
6 . 已知
是双曲线
的左、右焦点,点M是过坐标原点O且倾斜角为60°的直线l与双曲线C的一个交点,且
则双曲线C的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1a647d340cfb9fea30a0604aff6390.png)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-12-21更新
|
920次组卷
|
7卷引用:四川省泸县第一中学2022-2023学年高二上学期期末考试数学(理)试题
名校
解题方法
7 . 如图,将扇形
圆弧
拉直后,恰得一边长为
的等边三角形,若利用泰勒公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce236ca879f7c7b927a56f0a37d65ee3.png)
的前三项计算
的值,则在扇形
中计算
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/3c044111-ebbc-42e0-beea-53e31bfb4c23.png?resizew=123)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce236ca879f7c7b927a56f0a37d65ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd21260aab06c2e6b94eb759b922b2f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66db91bb3be9e2b6ad567774e3699758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e5e815fc2bbf03d424b52fa920dd0e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/3c044111-ebbc-42e0-beea-53e31bfb4c23.png?resizew=123)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
8 . 已知圆C:
,圆M:
,过圆M上任意一点P作圆C的两条切线PE、PF,切点分别为E、F,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e383fcc122f267043fbafe0972bfb900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b47c3b88fe332ed888d85ec2e3abadf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231c8b6343f4fdd9605e5c4f891528db.png)
A.![]() | B.3 | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 已知圆
,圆
,过圆
上任意一点
作圆
的两条切线
、
切点分别为
、
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360219e869c4b3da4e1b822d393ff742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af694d58ab963867a6d4b61fb16a387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231c8b6343f4fdd9605e5c4f891528db.png)
A.![]() | B.3 | C.![]() | D.![]() |
您最近一年使用:0次
2022-12-10更新
|
281次组卷
|
3卷引用:四川省遂宁市遂宁高级实验学校2022-2023学年高二上学期期中数学(理)试题
名校
解题方法
10 . 已知向量
,满足
,
与
的夹角为
,且实数x、y满足
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b9656216369e6cb6f74b9237ad6347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/395cbe62fe21da295b0f93fd1f83e174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf99adccc80f28343fedd8d0aad7429.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次