1 . 如图,点
、
,点
在
轴正半轴上,过线段
的
等分点
作与
垂直的射线
,在
上的动点
使
取得最大值的位置记作
.是否存在一条圆锥曲线,对任意的正整数
,点
都在这条曲线上?说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527adf33876b600568772d6ff0a91310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3af02baf8698283da1642be10139742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2451fdae3c590a4099e9ad91e5edea9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468edcfef1bcd7e74491a57a70c1bcb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468edcfef1bcd7e74491a57a70c1bcb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3033c1b98cee16fbc356144a653840cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966da36c512dc6ce4569675f60d26778.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/01b95714-8fe2-4dc7-bebb-980f9deb92cd.png?resizew=280)
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2 . 已知过点
的直线l:
的一个法向量为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663b6bb8e965eebfdfe57372380dd61d.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f99bddac58806e0024a1268378fe53d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8dc883d2cfe9c469090b0defbf09c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efe3a946404ef2f045737c440e8817ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663b6bb8e965eebfdfe57372380dd61d.png)
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3 . 在
中,角A、B、C的对边分别为a、b、c.若
,求
(1)
的值;
(2)求角A的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81db76839bff3690688d14603ee678b.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2122e2bd7b61698002e6f11b78a7475.png)
(2)求角A的值.
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2020-01-13更新
|
409次组卷
|
2卷引用:上海市十四校(原十三校)2016-2017学年高三上学期12月联考数学试题
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4 . 设
,
,且
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbca35447f35983f56d725bb4c3300b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdec86917527a3571f9e2c14c9a919b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14a94e32b10d0edc8c564f43f527c16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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5 . 三倍角的正切公式为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66dea39ecfb8411bf8da28674f340d6b.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66dea39ecfb8411bf8da28674f340d6b.png)
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6 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629b8000f1cf24738fb7f44333c5c048.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba80eb5253bed4d4834ebbf39980424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c2c6a7ef802b79095bef6fa8bec32c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629b8000f1cf24738fb7f44333c5c048.png)
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2019-12-11更新
|
850次组卷
|
7卷引用:上海市嘉定区2018-2019学年高一下学期期末数学试题
上海市嘉定区2018-2019学年高一下学期期末数学试题上海市上海外国语大学附属中学2018-2019学年高一下学期期末数学试题(已下线)专题2.1 三角【专项训练】-2020-2021学年高一数学下学期期末专项复习(沪教版2020)江苏省涟水中学2017-2018学年高一下学期第一次模拟考试数学试题新疆乌鲁木齐市第四中学2019-2020学年高一上学期期末数学试题甘肃省静宁县第一中学2019-2020学年高一下学期期中考试(第二次月考)数学(理)试题(已下线)第五章 三角函数-【优化数学】单元测试基础卷(人教A版2019)
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7 . 已知
,则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef966cdd137b3b10e290201b4d17542e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339562558fee8fcacce4db2bd0feec89.png)
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2019-12-11更新
|
366次组卷
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4卷引用:上海市黄浦区2018-2019学年高一下学期期末数学试题
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8 . 已知
,则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce42af28466f893a8eb50d66fd3ddaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
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9 . 如图,已知城市
周边有两个小镇
、
,其中乡镇
位于城市
的正东方
处,乡镇
与城市
相距
,
与
夹角的正切值为2,为方便交通,现准备建设一条经过城市
的公路
,使乡镇
和
分别位于
的两侧,过
和
建设两条垂直
的公路
和
,分别与公路
交汇于
、
两点,以
为原点,
所在直线为
轴,建立如图所示的平面直角坐标系
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/4b603bae-9f2e-4d9c-884f-65b7869989d3.png?resizew=161)
(1)当两个交汇点
、
重合,试确定此时
路段长度;
(2)当
,计算此时两个交汇点
、
到城市
的距离之比;
(3)若要求两个交汇点
、
的距离不超过
,求
正切值的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6ec57fcc8a096a74326498c52336ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04706a46fcacd1a9546408f714566db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/4b603bae-9f2e-4d9c-884f-65b7869989d3.png?resizew=161)
(1)当两个交汇点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(3)若要求两个交汇点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4513fb1d95d00b586817c27f55aa4bff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
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2019-12-10更新
|
594次组卷
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4卷引用:上海市上师大附中2018-2019学年高二上学期期中数学试题
上海市上师大附中2018-2019学年高二上学期期中数学试题上海市上海师范大学附属中学2017-2018学年高二上学期期中数学试题(已下线)专题4.1 坐标平面上的直线【压轴题型专项训练】-2020-2021学年高二数学下学期期末专项复习(沪教版)(已下线)第1章《直线与方程》 培优测试卷(二)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)
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10 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa3d3ca8ae9c034b384ba8267808553.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9772e014a07a063d6fac612e277f1ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa3d3ca8ae9c034b384ba8267808553.png)
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2019-11-16更新
|
477次组卷
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3卷引用:上海市第二中学2017-2018学年高一下学期5月月考数学试题