名校
解题方法
1 . 求值:
(1)
;
(2)已知
,
,
,求
的最小值.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f2ad86f8a3818919934b1353a94f720.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c91e2c2f980be0bd182d1b6fe03586b4.png)
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2 . 在正四面体
中,
是
的中点,
是
的中点,则异面直线
与
夹角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
3 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50eaa317ceca928131352fba44e3ff53.png)
(1)若
时,
的两根为
,则
的最小值为__________ .
(2)若
时,
恒成立,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50eaa317ceca928131352fba44e3ff53.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9587df831df1af5e7dd6be5fdc7bd8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27c7f82af113d582d26cf9f1d908eef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec956819ccd595ba49c2c37e324d58f4.png)
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名校
解题方法
4 . 在△ABC中,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
__ ;若
,
(
),且
,则
的值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff400c098ae6bf6abd24651a5a21114e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3634cfb2285e82b30d22805474f51275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b8e5990ef4ef314941a3154457a9d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5422fbc656371f35536edabb5e5b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
解题方法
5 . 在
中,
对应的边分别为
,已知向量
,且
为边
上一点,
,且
.
(1)求
;
(2)求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c1e84aaa7e1b5c1283075b36c72fb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/490d4763586264eb9bad32ac1e84e6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5eaa01c88ea3ea9b08de231b3297ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb80254d3581bf660a0bfd376de9dc01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3ba8b214034c287276f4966069d95e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40bcf5c0ccfc3f1a40c4430246edf4c8.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2024-05-12更新
|
575次组卷
|
2卷引用:浙江省杭州市联谊学校2023-2024学年高一下学期5月月考数学试题
名校
解题方法
6 . 在
中,角
所对的边分别是
,若
,
边上的高为
,则
的最大值为( )
![](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/6657cfd0dd62a9013ea36c627afe837b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-05-11更新
|
672次组卷
|
6卷引用:浙江省杭州市联谊学校2023-2024学年高一下学期5月月考数学试题
浙江省杭州市联谊学校2023-2024学年高一下学期5月月考数学试题河南省郑州市第一中学2023-2024学年高一下学期期中考试数学试卷(已下线)专题05解三角形压轴小题归类(2) -期末考点大串讲(苏教版(2019))(已下线)核心考点3 解三角形与实际应用 B提升卷 (高一期末考试必考的10大核心考点) (已下线)专题05 解三角形(2)-期末考点大串讲(人教B版2019必修第四册)(已下线)专题4 解三角形中的最值与范围问题【讲】(高一期末压轴专项)
名校
解题方法
7 . 设
三个内角
的对边分别为
,且
.
(1)求
的值;
(2)设
为锐角三角形,
是边
的中点,求
的取值范围.
![](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/3f3504325d5e352ea6214b656e2a94de.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b24caba7170949b284f9d42a6b8768cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd2915a8da6d294bcd7fa26d9fc1270.png)
您最近一年使用:0次
名校
解题方法
8 . 已知
满足
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d399a3dd1fc3a8922234a461c8642327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32f2d4d1d2c16c54b2caef17840bfcb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
9 . 已知
,如图,在
中,点
满足
在线段BC上且
,点
是AD与MN的交点,
.
来表示
和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
(2)求
的最小值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d812643e080d4d447fab7fe2ae2646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fba4eb4fbdf7654f52b31d4138742e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc57614c316ede4c0a0ab3d533e21bd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1d750e26e69fa8c6ddd99d6073417ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0be656083580a03c6481fb75881b84f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32043a653eba02c79ae6395b3bcb34f.png)
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2024-04-30更新
|
940次组卷
|
5卷引用:浙江省杭州市联谊学校2023-2024学年高一下学期5月月考数学试题
浙江省杭州市联谊学校2023-2024学年高一下学期5月月考数学试题江西省景德镇市乐平市第三中学2023-2024学年高一下学期4月期中考试数学试题(已下线)专题01 第六章 平面向量-期末考点大串讲(人教A版2019必修第二册)(已下线)专题01 平面向量(2)-期末考点大串讲(苏教版(2019))(已下线)高一下学期期末考试01(范围:三角函数+必修第二册)-重难点突破及混淆易错规避(人教A版2019必修第二册)
10 . 在某海域A处的巡逻船发现南偏东
方向,相距a海里的B处有一可疑船只,此可疑船只正沿东偏北
(以B点为坐标原点,正东,正北方向分别为x轴,y轴正方向,1海里为单位长度,建立平面直角坐标系)方向匀速航行.巡逻船立即开始沿直线匀速追击拦截,巡逻船出发t小时后,可疑船只所在位置的横坐标为bt.若巡逻船以30海里/小时的速度向正东方向 追击,则恰好1小时与可疑船只相遇.
(1)求a,b的值;
(2)若巡逻船以
海里/小时的速度进行追击拦截,能否拦截成功?若能,求出拦截时间;若不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
(1)求a,b的值;
(2)若巡逻船以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eeda3056f270150c01e4ca16bceee64.png)
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