名校
1 . 边长为2的正方形
中,
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862de06e8bf1a4562d68c8fcc13facde.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866258e79e0df8be62269d7c17529669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862de06e8bf1a4562d68c8fcc13facde.png)
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2 . 已知
为单位向量且夹角为
,设
,则
在
方向上的投影为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42503437fb44722722cd20835f11d233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9dc2fab8836a978ff5c407badb3d0a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
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3 . 已知向量
,向量
与向量
的夹角为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea9667ed97e09ffd0e17f8cde91dfaf.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a5e8988fcf5ee9f4de1b34f12114688.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/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea9667ed97e09ffd0e17f8cde91dfaf.png)
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2019-11-05更新
|
683次组卷
|
5卷引用:湖北七市(州)教研协作体2018年3月高三联考考试理科数学试卷
4 . 正六边形
的边长为1,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d9a5f5ad0a1de19a1027d90282ae74.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d9a5f5ad0a1de19a1027d90282ae74.png)
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5 . 等腰梯形
中,已知
,
,
,点
,
分别在线段
和
上,且
,
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86c0ad79161fb29ec231dd0248623ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e921f46d90e43f4517c55832b6280f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d276c39029bfe05a2bae80adcfc2a95a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e6f6dab0308e58c0d268d7555623766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de70b417f01a0099f6d4c5511a7c77ae.png)
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6 . 已知向量
,
,
满足
,且
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7926af05d0fa3ae6393bec85c060f12e.png)
_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e4d9ab7f5a83344aa811feeeb51094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28280aaac77be24aa72379e49b6f01e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ace13ebf9148c275e0b1f0ac5f5b6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2882fc87e925ef610a421d1cf6a294c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7926af05d0fa3ae6393bec85c060f12e.png)
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2018-08-09更新
|
497次组卷
|
2卷引用:【全国市级联考】湖北省武汉市2018届高三毕业生四月调研测试理科数学试题
名校
7 . 在
中,
,点
是
所在平面内一点,则当
取得最小值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b262eeda5e6d2fe374b54f5452e1459.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c831c4be20210ebce896ed4cd655eb6a.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/ad037d5750503c7d1ff84be268e6f9a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b262eeda5e6d2fe374b54f5452e1459.png)
您最近一年使用:0次
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8 . 平面向量
与
的夹角为
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eadb79c0238e2c545eee4fea2a07003.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/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6234d132ead5cf8194883f1b3fe22622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d852f97dc7e5afcaac57ee7b0b3303f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eadb79c0238e2c545eee4fea2a07003.png)
您最近一年使用:0次
2018-07-01更新
|
952次组卷
|
5卷引用:【校级联考】湖北省八校(鄂南高中.黄石二中.华师一附中.黄冈中学.荆州中学.孝感中学.襄阳四中.襄阳五中)2019届高三第二次联合考试数学(理科)试题
13-14高一下·广东·期中
名校
解题方法
9 . 已知向量
与
的夹角为
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265614502d8ba2af7116910631a641d9.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9bf2423499d45354dbc8377f1f04e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129eba912dc2642fcbadeeaf0adde50f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265614502d8ba2af7116910631a641d9.png)
您最近一年使用:0次
2018-05-03更新
|
784次组卷
|
6卷引用:【全国百强校】湖北省荆州中学2018届高三全真模拟考试(二)数学(理)试题
10 . 在
中,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3369c1b436cab0477b66d80b23f7239.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0105063a052ce5a94288ad64e81fa14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bfa9415b1c3c5b225f93e5c064f8091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3369c1b436cab0477b66d80b23f7239.png)
您最近一年使用:0次