已知角
,
(
,
)的顶点与原点O重合,始边与x轴的非负半轴重合,点
,
分别在角
,
的终边上.
(Ⅰ)设函数
,
,求
的最大值;
(Ⅱ)若点C在角
的终边上,且线段
的长度为
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c2b22686fd1a407aef078642210a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93fd47613fa22ee2851ce54c0727cd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4258b2df7c7496adf889300faf969699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a4f7f9c4a8f3b29edacee581538b8fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(Ⅰ)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2921bc3d979d102f1231abadd00f4b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b479001db0e7fb03b5cf408d16c39ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)若点C在角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbf9680f74a9ac5d934304654ce2771.png)
20-21高三下·浙江·阶段练习 查看更多[4]
浙江省名校协作体2021届高三下学期联考数学试题(已下线)思想05 第三篇 思想方法(测试卷)-2021年高考二轮复习讲练测(浙江专用)(已下线)黄金卷16-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(山东高考专用)(已下线)【新东方】高中数学20210429—010【2021】【高三下】
更新时间:2021-03-02 19:33:28
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图所示,在平面直角坐标系中,角
与
(
)的顶点与坐标原点重合,始边与
轴的非负半轴重合,终边分别与单位圆交于
两点,点
的横坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/af905e6b-6e58-4ca2-ba6b-b5837117b1bc.png?resizew=200)
(I)求
;
(Ⅱ)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa948cb66784cd5839721537ae85542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6ddf31b7d9225a4239883af72d153b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/af905e6b-6e58-4ca2-ba6b-b5837117b1bc.png?resizew=200)
(I)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49117e204a0ac0b6fa88ef492bd4c9e.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20dc94ea88fd0834de120c2c3df876e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fe57d4fbae536de2e641d9d349fcf1.png)
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解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】如图所示,一条直角走廊宽为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d76eae89a0084b32f2e2a2a1471d547c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/6/aab35ce8-cc19-46b7-bee1-968172f4c8b3.png?resizew=171)
(1)若位于水平地面上的一根铁棒在此直角走廊内,且
,试求铁棒的长
;
(2)若一根铁棒能水平地通过此直角走廊,求此铁棒的最大长度;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d76eae89a0084b32f2e2a2a1471d547c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/6/aab35ce8-cc19-46b7-bee1-968172f4c8b3.png?resizew=171)
(1)若位于水平地面上的一根铁棒在此直角走廊内,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e43dded006909d34838efe4f189c4c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若一根铁棒能水平地通过此直角走廊,求此铁棒的最大长度;
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
,若存在实数
满足
,则
的最小值为
.
(Ⅰ)求函数
的最小正周期
及
的值;
(Ⅱ)若
,
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f456e9dbe0e48f55c0f3714cefd7e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/341fa8bfbcba3da924ba1c279e4a6be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579b5c1a8e712d2691c0775a6a892413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c085f506b2d1e5f23c6febfce043a716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9724f0b71c695a9fdca7a5f6a48bf199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6abc69c57972a4efb8301e3308ea9ca6.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
名校
【推荐2】(1)已知
,
,且
,
,求
的值;
(2)化简并求值:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f60ed35a7e27ea2af5a98103a6cf89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb4234175c2f92792ab2d298d45df37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f3f98fe3b0457a5792aee216ffc217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164bd33769c7ee7f85798bbca745895c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b04da7eac640b5b735da7fb5da8cfd.png)
(2)化简并求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3d7a5f6c90b981dc21f70d967aa482.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
【推荐1】如图,为了测量河对岸
、
两点的距离,观察者找到一个点
,从
点可以观察到点
、
;找到一个点
,从
点可以观察到点
、
;找到一个点
,从
点可以观察到点
、
.并测量得到以下数据,
,
,
,
,
米,
米.求
、
两点的距离.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c218221a10eadbd402fcbf43ba60f496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd82cb64ec5f681287c961ecfe30dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe9e969dd9de77620d16f8d4385dcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0e19da3e454d13edd1b3820a336d29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e375b200e5da85244a3d6a1eb579fd50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9d0ab7a62db1ba073b6794171fd879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/262387d8-0067-4522-a60b-ee82e6745e3c.png?resizew=189)
您最近一年使用:0次
【推荐2】在①△ABC外接圆的半径为
,a>c;②△ABC的BC边上的高为
,a>c;③ asinB+bcosA=0这三个条件中任选一个,填在下面题中的横线上,并解答.
在△ABC中,已知内角A,B,C的对边分别为a,b,c,已知b=2,c=
,且 .
(1)求边长a的值;
(2)求cos(A-B)+cosC的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4056761b8f826eeb6ad8c9a151d3c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
在△ABC中,已知内角A,B,C的对边分别为a,b,c,已知b=2,c=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求边长a的值;
(2)求cos(A-B)+cosC的值.
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐1】美化环境,建设美好家园,大家一直在行动.现有一个直角三角形的绿地,
,计划在
区域建设一个游乐场,其中
米,
米,
.
(1)若
米,求NC的长;
(2)设
,求游乐场区域
面积的最小值,并求出此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b179eefd5575c457ae204cc9f60027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5cf48407af008db11eb4f236691d741.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/31/34b6f56c-4bff-43d7-abaa-2a0d5ef833d7.png?resizew=154)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a96d1e67d5e74d6122c8dfa63f183.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd66efa75728f06d56c53886b58424c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】在
中,角
,
,
的对边分别为
,
,
且
.
(1)求
;
(2)若
,求
的周长
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf33d2b697c3e078ccb18958029533ce.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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