名校
解题方法
1 . 如图,在平行四边形
中,
为
的中点,
为
的中点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/705d0cd198f423d1a7d6b9a7999c18ee.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d44c5eed68fe8d00ee3d0e721f7cff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/705d0cd198f423d1a7d6b9a7999c18ee.png)
![](https://img.xkw.com/dksih/QBM/2020/4/13/2440509582237696/2440563762397184/STEM/ac59caddbc974893a91d9c0b33d4ebd5.png?resizew=238)
您最近一年使用:0次
2020-04-13更新
|
880次组卷
|
5卷引用:2020届全国100所名校最新高考模拟示范卷高三文科数学模拟测试试题(一)
名校
2 . 在平行四边形ABCD中,A(1,2),B(-2,0),
,则点D的坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65b9b4484f52cbe71841fa18cf1ea539.png)
您最近一年使用:0次
2019-03-25更新
|
1193次组卷
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6卷引用:【校级联考】甘青宁部分学校2019届高三3月联考数学(理)试题
名校
3 . 在△ABC中,∠BAC=
,以AB为一边向△ABC外作等边三角形ABD,∠BCD=2∠ACD,
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5955b01b69c87fed78d72cc63696cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
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2018-09-13更新
|
1320次组卷
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3卷引用:福建省永春第一中学2017-2018学年高一下学期6月考试数学科试卷
解题方法
4 . 在
中,
,
,若
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639856ddf4b04943a7b1440cc8596c70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709c03a65d1892c783e6b35916e4787b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa353327fcd2395116327dedba0ddd68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407e4330cfdd5cd0bcfd4f3bd1a898e6.png)
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2020-11-24更新
|
724次组卷
|
6卷引用:江淮十校2020-2021学年高三上学期11月第二次联考文科数学试题
解题方法
5 . 已知
,
,若实数
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec4b5b808b3ef48b35feb3a95b37224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0058ba98518e596949c4f83461a1154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6a64f921304f410eaf46fa02a291b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
您最近一年使用:0次
解题方法
6 . 如图所示,在同一个平面内,向量
,
,
满足:
,
与
的夹角为
,且
,
与
的夹角为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/705d0cd198f423d1a7d6b9a7999c18ee.png)
_______________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604e033c0105b4e10ffbe97edf3d8e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc1d1b8795e1ce1fa500896959e0271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e4012993d99698492460dc66e05a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/705d0cd198f423d1a7d6b9a7999c18ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/4bfe4751-a7d7-4a0c-9277-287f5cf3a4be.png?resizew=160)
您最近一年使用:0次
2021-12-02更新
|
446次组卷
|
3卷引用:中学生标准学术能力诊断性测试2021-2022学年高三上学期11月测试文科数学试题
解题方法
7 . 已知向量
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64b2c71c9a54aaa2662ff33e52f42990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f74793151fe45755e7ac9e1b6d64ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70facc9bc02af0867d248407bd317c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次
解题方法
8 . 在矩形
中,已知
,
,
为
上一点.
(1)若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f594898ac298fb28edc09796ad3ca899.png)
_____ ;
(2)若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f594898ac298fb28edc09796ad3ca899.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3e7ca8d61e3b8b944d5b3905355bbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f594898ac298fb28edc09796ad3ca899.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6895035630ceb7851061e1da82f935b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f594898ac298fb28edc09796ad3ca899.png)
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2020-04-12更新
|
610次组卷
|
4卷引用:中原金科大联考2019-2020学年高三4月质量检测数学(文)试题
中原金科大联考2019-2020学年高三4月质量检测数学(文)试题2020届中原金科大联考高三4月质量检测数学(文)试题(已下线)文科数学-2020年高考押题预测卷01(新课标Ⅱ卷)《2020年高考押题预测卷》(已下线)第一次月考填空题压轴题十四大题型专练-举一反三系列
解题方法
9 . 在
中,已知
是
边上一点,若
,
,则
___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f5ac5d619ca982385e7e2d1cf40fc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccb06efbe8186bdd395d33bf31525b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5113986d9507fc5015e71989831c128b.png)
您最近一年使用:0次
2021-10-06更新
|
363次组卷
|
4卷引用:英才大联考2022届高三上学期月考试卷二理科数学(全国卷)试题
英才大联考2022届高三上学期月考试卷二理科数学(全国卷)试题(已下线)专题22 平面向量的基本定理的应用-备战2022年高考数学一轮复习一网打尽之重点难点突破江西省七校2022届高三上学期第一次联考数学(理)试题(已下线)6.3.1平面向量基本定理(分层作业)-【上好课】
名校
10 . 已知矩形
的边长为
,
,
为
边上靠近点
的三等分点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ce8026d0ea1daba38f415bfa4eb9b1.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ce8026d0ea1daba38f415bfa4eb9b1.png)
您最近一年使用:0次
2020-05-09更新
|
528次组卷
|
4卷引用:2019届全国100所名校高三下学期最新高考模拟示范卷(四)理科数学试题