1 . 如图,点
为△
的重心,且
,
,则
的值为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9a7b881dd04ffc14380053ae94f259.png)
![](https://img.xkw.com/dksih/QBM/2016/12/2/1573196334628864/1573196340715520/STEM/ce4270606fec465e82859a6c677f956b.png?resizew=149)
您最近一年使用:0次
2016-12-05更新
|
769次组卷
|
2卷引用:2017届江苏南通中学高三上期中数学(理)试卷
2 . 在△ABC中, ∠ABC=120°,BA=2,BC=3,D,E是线段AC的三等分点,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1cf047d01a1a252106ff8d0535415a5.png)
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3 . 扇形
中,弦
为劣弧
上的动点,
与
交于点
,则
的最小值是_____________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571f8dfb1eb003438f27bab2324140ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d69f81a8e5731509c6f6f5b99525890e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6337390a597688ce91e635b43889fed.png)
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解题方法
4 . 在
中,若
,
,
,
,则
的面积为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/7366dece62e5d429c30331ad31aaedbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0977b2e60de726d780b9aaa53c54b0cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2017-05-27更新
|
541次组卷
|
3卷引用:江苏省徐州市2017届高三信息卷数学(理)试题
5 . 如图,在等腰直角三角形
中,
,点
,
分别是
,
的中点,点
是
(包括边界)内任一点.则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ad3a578f403b9e6b97fa2dc955fc11.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ab088f743f38685658be5bee01742a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/2d503e9f-4c15-4a6d-a24b-64244ccaf2ce.png?resizew=176)
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6 . 如图所示,已知
,用
表示
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b028265e13469210b027d55fa90bd47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870621330877caa08df79df91fc4ff4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82973c2b6d1c407318545f1c0f32ec2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/dab69f93-e626-4f34-93fd-4585c0d58b50.png?resizew=156)
您最近一年使用:0次
2018高一上·江苏·专题练习
解题方法
7 . 如图,在
中,
是
上一点,且
,设
,则
=__________ .(用
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8c563906d6d25078fd5d96abe96194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211429ce394297f664f6b8e16edec714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8337706c550bc095d7a2bd872221a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/3291323c-b790-4d40-a958-1fe53ac48c4c.png?resizew=179)
您最近一年使用:0次
8 . 如图,在四边形ABCD中,
=5,BD=4,O为BD的中点,且
=
,则
=__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe10cd4f9ee205017195dadfd15f9f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864bc25cd8428dc1824dd4129632fe6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ede448bc4584c3436aff5aa48a887a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/962ff54dd7001e9837b082126c5045b6.png)
![](https://img.xkw.com/dksih/QBM/2017/10/10/1792483540860928/1793781818736640/STEM/62a99d65a74a4360b24891731c7148ab.png?resizew=147)
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12-13高三·天津·阶段练习
名校
9 . 设
、
为
的两点,且满足
=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c36ab85f2cbfa4fa27df0a56310e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03fa39b8b74d8eed134e238347b5b6a5.png)
+
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6863c903464cb64819c410e6fe6242.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d036188ce294e3c7427d0b7d2294fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c36ab85f2cbfa4fa27df0a56310e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03fa39b8b74d8eed134e238347b5b6a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d036188ce294e3c7427d0b7d2294fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0fe3fd625659f6e4c56a35f49fa64c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6863c903464cb64819c410e6fe6242.png)
您最近一年使用:0次
2016-12-02更新
|
572次组卷
|
4卷引用:江苏省镇江中学2019-2020学年高一下学期4月阶段检测数学试题
江苏省镇江中学2019-2020学年高一下学期4月阶段检测数学试题(已下线)2013届天津市天津一中高三第四次月考文科数学试卷(已下线)2014届高考数学(文)三轮专题体系通关训练倒数第6天练习卷【全国市级联考】广东省深圳市2018届高三高考模拟测试9数学试题
10 . 在
中,
,
,
.若
,
(
),且
,则实数
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](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/306675115da6dc073b46ac5c03c95732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535b26625378bb65a373d6fe9d16f67b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d125051e1acffc7ba99bfa6120478ad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b8e5990ef4ef314941a3154457a9d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26157800469000581aebfd953269d0fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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