解题方法
1 . 在
中,角
所对的边分别为
,已知
.
(1)求
的大小;
(2)若
,求使
面积取得最大值时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8604e40595ed8a98cda0ef529845a082.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b97bb18e5ca34d22b5e827316a122a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ff2912fd8d93b6e692936d95b727c5.png)
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解题方法
2 . 已知点
,点
(
),且函数
.
(1)求函数
的解析式;
(2)求函数
的最小正周期及最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236e29f71c18b5954deadf3f321180a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c1dad259b20df543710ecf1f5b49c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ed39bc8ecaba20182c1b79fbae39e6.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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解题方法
3 . 在
中,角
所对的边分别为
,且满足
.
(1)求角
;
(2)若
,且
,求边
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17289abaf6b0fcb0b40ed39f62a91e96.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1a7b6f0d417eab8cb47d187e85b506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
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4 . 设函数
.
(1)若
,求
的单调递增区间;
(2)在锐角
中,角
的对边分别为
,若
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b9708958cc94a6a5865ad518a9adf1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01b6fb6a1c7a895df528382a5583444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)在锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af3471429323ccc814dae2ae4d0d5565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2016-12-04更新
|
419次组卷
|
2卷引用:2016届贵州省贵阳市一中高三第五次月考理科数学试卷
10-11高三上·福建宁德·期中
5 . 某港口O要将一件重要物品用小艇送到一艘正在航行的轮船上,在小艇出发时,轮船位于港口的O北偏西30°且与该港口相距20海里的A处,并正以30海里/小时的航行速度沿正东方向匀速行驶.假设该小艇沿直线方向以v海里/小时的航行速度匀速行驶,经过t小时与轮船相遇.
![](https://img.xkw.com/dksih/QBM/2010/11/2/1569883782127616/1569883787526144/STEM/a6d36641d78c4fd4b6004be42a54e0f4.png?resizew=194)
(I)若希望相遇时小艇的航行距离最小,则小艇航行速度的大小应为多少?
(II)为保证小艇在30分钟内(含30分钟)能与轮船相遇,试确定小艇航行速度的最小值.
![](https://img.xkw.com/dksih/QBM/2010/11/2/1569883782127616/1569883787526144/STEM/a6d36641d78c4fd4b6004be42a54e0f4.png?resizew=194)
(I)若希望相遇时小艇的航行距离最小,则小艇航行速度的大小应为多少?
(II)为保证小艇在30分钟内(含30分钟)能与轮船相遇,试确定小艇航行速度的最小值.
您最近一年使用:0次
2016-12-03更新
|
258次组卷
|
5卷引用:贵州省遵义市凤冈二中2018-2019学年高一下学期第一次月考数学试题
贵州省遵义市凤冈二中2018-2019学年高一下学期第一次月考数学试题(已下线)2011届福建省古田一中高三上学期期中考试数学理卷(已下线)2012-2013学年福建省福建师大附中高二上学期期中考试文科数学试卷2015-2016学年福建厦门双十中学高二上期中理科数学试卷(已下线)模块综合检测(A)-2018-2019版数学创新设计课堂讲义同步系列(苏教版必修5)
6 . 在
中,
.
(1)求
的面积;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f6dcb90d06abece9861c57a06ada430.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc7407d82d6e55b969d34e937ce36f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
7 .
中,角
、
、
所对的边为
、
、
,且
.
(1)求角
;
(2)若
,求
的周长的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386e199da3e443fb714171956d4bac85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2868b617c871e18c928c9a573bc8c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49de2536004d4f0819e781fffca41a2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec1776bfd268b6b807ac573b4a87ce6.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/453a8177071e89551a62e48542f41ea7.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2868b617c871e18c928c9a573bc8c7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f8034df6b0137824b8e253f958df6.png)
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10-11高三·贵州·阶段练习
8 . 在
中,角
所对的边分别为
.向量
,
.已知
,
.
(Ⅰ)求
的大小;
(Ⅱ)判断
的形状并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d307b77479178cb98cea160974b2d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931d92d763dddd513d717a7cbe0fc7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242b0af4f33851007b2052508dd3790e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850e2bc625eca71b12044de26db2fa3a.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(Ⅱ)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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9 . 在△ABC中,已知角A、B、C所对的边分别是
且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb6388e3c3dabfde03dc1eca0fab079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24db09e56b38eefebf1e98662cc07f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb6388e3c3dabfde03dc1eca0fab079.png)
(1)求B;
(2)若,求
的值.
您最近一年使用:0次
名校
10 . 为了应对日益严重的气候问题,某气象仪器科研单位研究出一种新的“弹射型”气候仪器,这种仪器可以弹射到空中进行气候观测,如图所示,
三地位于同一水平面上,这种仪器在
地进行弹射实验,观测点
两地相距100米,
,在
地听到弹射声音比
地晚
秒(已知声音传播速度为340米/秒),在
地测得该仪器至点
处的仰角为
,即
,求这种仪器的垂直弹射高度HC.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.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/ae9238d479a14c040048fce551a95a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b138e6bdf2040c5a4abd681e566712f0.png)
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