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1 . 在
中,角A、B、C所对的边分别为a、b、c,若
,且
.
(1)求角A、B、C的值;
(2)若
,求函数
的最大值与最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2681f0d1732bcaa8d6362fbd1fa6caa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340136b41ede83397a4dcb43368c88e8.png)
(1)求角A、B、C的值;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f262a469d41479a734deb7e56726a05.png)
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2 . 已知
的外接圆的圆心为
,半径为2,若
,且
,则向量
在向量
上的投影为_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c4c13af129ba5dd12d35b431836a9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6100f629d6d9660225199c13d4810e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e5b64c049e2c6aa50e3008f3e2fdeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2196a273b5193b5cd4c072331a155b63.png)
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3 . 已知
,且
与
的夹角为
(1)求
;
(2)若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2436ceefe6943b41626fa5ac12aac45.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/2d88591679796c52024d11c4de641bdb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94bee542fe9c94b1d556adbe37909eb6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc88b1c6211e429949e819fae527973f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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4 . 已知O为坐标原点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c2b0f51c8029ee90245937a8a96989.png)
(1)若
为锐角,求实数
的取值范围;
(2)若
是以
为直角的直角三角形,求实数
的值并求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c2b0f51c8029ee90245937a8a96989.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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5 . 给出下列命题:①在
中,
;②若A,B,C,D是不共线的四点,则
是四边形
为平行四边形的充要条件;③若
且
,则
;④若
,且
.其中正确的命题有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e184b35a597b0246bb6fd5d985267c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d553c04a8d0faefd23b016e73a4cba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a6579a0ba67d23494b584bf1e2cb13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebf6efda6baa9b1240dcc6fd581ca126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e8cf36cabac8d78cb7eb92ec4c44fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0674386f0d1fcf53da104626f2da95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3854a1870df3dfab871bb1b15d41cb07.png)
A.0个 | B.1个 | C.2个 | D.3个 |
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2019-12-04更新
|
586次组卷
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2卷引用:上海市文绮中学2018-2019学年高二上学期期中数学试题
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6 . 已知向量
(
),
,若
,则
的最大值为___
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35ee800369165eb474201821c27d9067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/785126a0e6ced4afca7366026db29071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d887fe42756114f40e52ade07451c7d3.png)
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2019-12-04更新
|
449次组卷
|
4卷引用:上海市闵行中学2018-2019学年高二上学期期中数学试题
上海市闵行中学2018-2019学年高二上学期期中数学试题上海市黄浦区2016-2017学年高三上学期期终调研测试数学试题2017年上海市黄浦区高考一模数学试题(已下线)课时35 圆的方程-2022年高考数学一轮复习小题多维练(上海专用)
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解题方法
7 . 已知
,
,且
与
夹角为
,
求:(1)
;
(2)
;
(3)
与
的夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b472b5fa672d675040ee5899bbed76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e3d33a8f66715e36bd0677ddc06313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
求:(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78357c1ef13fa0a00a34f37632bfd4ff.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5562c81204a7b211c22f62c1a0b55768.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b91254db5ff748150f449c5cdd256c.png)
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2020-11-07更新
|
757次组卷
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5卷引用:上海市七宝中学2020-2021学年高二上学期10月月考数学试题
8 . 一个球夹在120°的二面角内,且与二面角的两个面都相切,两切点在球面上的最短距离为
,则这个球的半径为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
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9 . 若一个圆锥的侧面展开图是面积为
的半圆面,则该圆锥的底面半径为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9fdc1f8ed0ae44b54a9a2a3aca2db4.png)
您最近一年使用:0次
2019-07-05更新
|
1337次组卷
|
5卷引用:上海市七宝中学2017-2018学年高二下学期期末数学试题
上海市七宝中学2017-2018学年高二下学期期末数学试题上海市浦东新区川沙中学2018-2019学年高二下学期期末数学试题上海市徐汇中学2022-2023学年高二上学期期中数学试题(已下线)5.1 任意角与弧度制-2020-2021学年高一数学同步课堂帮帮帮(人教A版2019必修第一册)九师联盟(江西省)2022届高三12月质量检测数学(文)试题
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10 . 已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceab4d55f954bdc63cd1e6352c114a10.png)
,若
,则正数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b99319b193c8070798c4b3604ba55b0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceab4d55f954bdc63cd1e6352c114a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b377f632949bff36083a5464113387fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7187306e66b46ee29de17477445eab7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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