名校
解题方法
1 . 已知边长为1的菱形
中,角
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6ad7acdec68cdb1e581f61c8bc7dc2.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0fbe1528ae828ee85eb6a96d35eabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6ad7acdec68cdb1e581f61c8bc7dc2.png)
您最近一年使用:0次
名校
2 . 已知正
的边长为1,中心为
,过
的动直线
与边
,
分别相交于点M、N,
,
,
.
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5dc34f1eb0f29b09e027a1f69479972.png)
________ .
(2)
与
的面积之比的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc6bd78eaf4e6b4a904b9850392fcf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323f0075c96990706da0ba1d81c91ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18bf5477ab809cf5b133a045b0ea8e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e07c611d39260a3160ef7380df0fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5dc34f1eb0f29b09e027a1f69479972.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-09-12更新
|
649次组卷
|
3卷引用:湖北省沙市中学2022-2023学年高一下学期期中数学试题
名校
解题方法
3 . 平面上三个力
作用于同一点,且处于平衡状态,已知
,
,
与
的夹角为45°,则
的大小为_____ N.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9caf35574763254692c70f83829d6259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239ac041ef8cf61227658257073a2f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0572861d3b7325184c4928031e424d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1282962a17a48a18edf733204054d67.png)
您最近一年使用:0次
4 . 已知平面向量
满足
,则
与
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e7ddbd7e5bee8e8b6b982fb39974c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 在
中,内角
的对边分别为
,
的角平分线交
于
,
为
的中点,则( )
![](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/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
6 . 如图,在平行四边形
中,
,
,
,延长
交
于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2165c8ce18a24734f6a59cf60c755d5b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbaccd578a43b2397c8bdd50592fa07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eab5cafca46c65bd4fd500134821b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2165c8ce18a24734f6a59cf60c755d5b.png)
![](https://img.xkw.com/dksih/QBM/2023/4/28/3226149216370688/3262383766183936/STEM/ba5e187124814ed8959955896317e548.png?resizew=189)
您最近一年使用:0次
解题方法
7 . 已知
分别为
的内角
所对的边,
,且
.
(1)求
;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](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/7315d701498c8f688b8981d4ec629b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c84e49bfcc71b8c7d2113230af7321.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7be1eb90c14d19a7cc66e8b90b7af89.png)
您最近一年使用:0次
2023-04-13更新
|
815次组卷
|
3卷引用:湖北省荆州市部分校2022-2023学年高一下学期期中联考数学试题
名校
解题方法
8 . 设
,
是不共线的两个向量,若
,
,
.
(1)若
,
,且
,求
与
的夹角
;
(2)若A,B,C三点共线,求m的值.
![](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/87bacd34871282154e6621171d64f7c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1002fcd7b1321ee5893c90283b5bcc76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3569431df08163b781c78b63ab530df8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54078c4af5b305e26b8e3faa6423e67e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b982e3d8f4df04309a922a4872dac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13653b0632c26d9d25d1a131e05330b7.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/c24095e409b025db711f14be783a406c.png)
(2)若A,B,C三点共线,求m的值.
您最近一年使用:0次
2023-03-31更新
|
478次组卷
|
3卷引用:湖北省荆州市部分校2022-2023学年高一下学期期中联考数学试题
名校
解题方法
9 . 下列命题中,是真命题的是( )
A.已知非零向量![]() ![]() ![]() ![]() |
B.若命题p:![]() ![]() ![]() ![]() |
C.在△ABC中“![]() ![]() |
D.在△ABC中,![]() ![]() |
您最近一年使用:0次
名校
解题方法
10 . 下列命题中,正确的是( )
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若不平行的两个非零向量![]() ![]() ![]() ![]() |
您最近一年使用:0次
2022-05-05更新
|
326次组卷
|
2卷引用:湖北省荆州市石首市2021-2022学年高一下学期期中数学试题