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1 . 如图,在平面四边形
中,
,
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a258cd6bc17e376271e7ec49cd29a8d8.png)
___________ ,若
是线段
上的一个动点,则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d777adf392866d76f7b60ef508140d98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b96fac11d72f72c805dbddb8da72d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f498b5078c72e038c7140d83b577f40d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a258cd6bc17e376271e7ec49cd29a8d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3984294fc399b72f09933c97420cf0c7.png)
![](https://img.xkw.com/dksih/QBM/2021/4/2/2691236538720256/2691673571753984/STEM/6e9e36ff-b94c-428f-90bf-cd9712050678.png?resizew=205)
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2021-04-03更新
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1357次组卷
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5卷引用:天津市部分区2021届高三下学期质量调查(一)数学试题
天津市部分区2021届高三下学期质量调查(一)数学试题(已下线)押第4题 平面向量-备战2021年高考数学(文)临考题号押题(全国卷2)(已下线)押第3题 平面向量-备战2021年高考数学(理)临考题号押题(全国卷2)天津市扶轮中学2022-2023学年高三上学期期末(线上)数学试题天津市静海区第一中学2022-2023学年高一下学期3月学业能力调研数学试题
解题方法
2 . 设点
是
的中线
上一个动点,
的最小值是
,则中线
的长是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4375c2e6043d6b700c7f1ca0609d6109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48042bc6f931bc79b03b6faf033547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
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3 . 如图,在
重,点D是线段
上靠近点C的三等分点.若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
___________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d649afbddd907f0dfec1420f02f82fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e768855d77ded4d7566cc9a929171069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/accdcd60-1bfd-43fc-afbc-aca5152b3870.png?resizew=184)
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2022-05-07更新
|
638次组卷
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2卷引用:浙江省9+1联盟2022届高三下学期5月模拟数学试题
名校
4 . 在平面直角坐标系
中,起点为坐标原点的向量
满足
,且
,
(
).若存在向量
、
,对于任意实数
,不等式
成立,则实数
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549d4d5cc28db404226013ce174d0e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b4918ca9bcb8aa2410feef883a3edc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cdc5f0e70e605ba22b663bce56b98a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26927f1f0be044942dfce30c3607158.png)
![](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/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de7d85f1d4fc6bcb6a05deb1d206892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
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2021-05-05更新
|
823次组卷
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8卷引用:上海市嘉定区2021届高三二模数学试题
上海市嘉定区2021届高三二模数学试题(已下线)课时27 平面向量的分解定理及应用-2022年高考数学一轮复习小题多维练(上海专用)上海市金山中学2022届高三上学期期中数学试题(已下线)第11讲 平面向量- 1(已下线)专题13 平面向量(模拟练)-1(已下线)专题13 平面向量(练习)-1上海市南洋模范中学2021-2022学年高一下学期期中数学试题湖南省常德市临澧县第一中学2023-2024学年高三上学期第二次阶段性考试数学试题
解题方法
5 . 已知
是圆心为O,半径为R的圆的内接三角形,M是圆O上一点,G是
的重心.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc1aaecdd41b343bc67d6871b1b81e2.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3fa7e8f8cdaebed54846d7c6c9634c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc1aaecdd41b343bc67d6871b1b81e2.png)
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解题方法
6 . 在
中,
是
边的中点.若
,则
的长等于________ ;若
,则
的面积等于____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d437aac144feb1b3654c8289814d5bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fdf609aedabb05d4f6a57dd5b4a6154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/378b71d902690dfdb29960d3828434a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2020-03-29更新
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765次组卷
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6卷引用:2020届北京市延庆区高三一模考试数学试题
2020届北京市延庆区高三一模考试数学试题(已下线)【新教材精创】9.1.1正弦定理(第1课时)练习(1)(已下线)专题12 平面向量-2020年高考数学母题题源解密(北京专版)(已下线)专题06 少丢分题目强化卷(第二篇)-备战2021年新高考数学分层强化训练(北京专版)(已下线)专题07 拿高分题目强化卷(第三篇)-备战2021年新高考数学分层强化训练(北京专版)(已下线)专题11.3 余弦定理、正弦定理的应用(重点练)-2020-2021学年高一数学十分钟同步课堂专练(苏教版2019必修第二册)
名校
7 . 如图,已知
为圆
的一条弦,且
,则
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9648ecad4382f88b428d6c4f2052aea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7db6bf46cdcd6b8235220c5a29e5ed85.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/503d8836-d932-4d58-a291-74a788502563.png?resizew=133)
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2019-05-27更新
|
891次组卷
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2卷引用:【市级联考】四川省宜宾市2019届高三第三次诊断性考试数学(理)试题
8 . 如图,在菱形
中,
,
.
![](https://img.xkw.com/dksih/QBM/2019/4/28/2192016814481408/2192418100240384/STEM/552420528d7b4c05822485170d7a2cd6.png?resizew=206)
(1)若
为
的中点,则
______
(2)点
在线段
上运动,则|
|的最小值为___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee63d7a67287c5254793609eef77f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://img.xkw.com/dksih/QBM/2019/4/28/2192016814481408/2192418100240384/STEM/552420528d7b4c05822485170d7a2cd6.png?resizew=206)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f33393aaf8b0968e625d5a3b2e141702.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b22eda48c8c87abb458b0bd67daf5d.png)
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2019-04-28更新
|
769次组卷
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5卷引用:【区级联考】北京市平谷区2019届高三第二学期3月质量监控试题数学(理)试题
2022高三·全国·专题练习
9 . 在
中,AB=4,AC=3,∠BAC=90°,D在边BC上(与B、C不重合),延长射线AD到P,使得AP=9,若
(m为常数),则DB的长度为 __ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f992e82ed3ba48c20c645719053bdb7.png)
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解题方法
10 . 伴随着国内经济的持续增长,人民的生活水平也相应有所提升,其中旅游业带来的消费是居民消费领域增长最快的,因此挖掘特色景区,营造文化氛围尤为重要.某景区的部分道路如图所示,
,
,
,
,要建设一条从点
到点
的空中长廊,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b019a7e50ec1de63e13a1d0c768c24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cda04a0cea0b00f58556010fe70fd76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6832b2a0bd8803b873ec86d7b1651f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/163c02f9861ab949e32a180ca249defb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/543be463-63d9-452e-8b29-b654270244b4.png?resizew=121)
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2020-12-04更新
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506次组卷
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4卷引用:河南省新乡市2021届高三第一次模拟考试数学(文)试题
河南省新乡市2021届高三第一次模拟考试数学(文)试题河南省新乡市2021届高三第一次模拟考试数学(理科)试题河南省信阳市2020-2021学年高二上学期期末数学(理科)试题(已下线)11.3 余弦定理、正弦定理的应用 2020-2021学年高一数学同步课堂帮帮帮(苏教版2019必修第二册)