如图,
为平面四边形
的四个内角.
;
(2)若
,
,
,
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65c20ae60d180a2e3a8ba1b3441701f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe7b43b781ba5be772b2bf4d302c0a4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2f094001e6d2bc08c99192e0d3a39c9.png)
2016高三·江西南昌·专题练习 查看更多[5]
2017届江西南昌市新课标高三一轮复习训练五数学试卷福建省2017年数学基地校高三毕业班总复习 三角函数 形成性测试卷(理科,A卷)(已下线)第10讲 拓展五:四边形问题 (讲)-2023年高考数学一轮复习讲练测(新教材新高考)江苏省常州市田家炳高级中学2023届高三一模热身练习数学试题(已下线)专题20 三角函数及解三角形解答题(理科)-2
更新时间:2016-12-04 23:15:19
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适中
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【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ba4964e235d679e9326ea4a298e24ce.png)
(1)求它的递减区间;
(2)求它的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ba4964e235d679e9326ea4a298e24ce.png)
(1)求它的递减区间;
(2)求它的最大值和最小值.
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【推荐2】已知向量
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/a5ddfb89-7874-40e7-a68a-fe8810254c7b.png?resizew=224)
(1)若
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(2)若函数
的图象上有如图所示的
,
,
三点,且满足
.求函数
在区间
上的最大值,并求此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ba14a19abcec443bc0627bb4237952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574f5154ae0ebf53534f595a272eeed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae9f908aabcd9d9c46a0ecdfd1d6c12.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/a5ddfb89-7874-40e7-a68a-fe8810254c7b.png?resizew=224)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05a467ddaa138590b3b56615c2c42a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.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/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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【推荐1】锐角
的内角
,
,
的对边分别为
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,
,设
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(1)求
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(2)若
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的面积为
,求
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![](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/2edaa44f3a524663ebaa7712ecd549df.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a1775791226b05958a916171415d4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】在△ABC中,a=7,b=8,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d710f4665a2b3c12d6bdf88a83833a1.png)
(1)求∠A;
(2)求sinC;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d710f4665a2b3c12d6bdf88a83833a1.png)
(1)求∠A;
(2)求sinC;
(3)求△ABC的面积.
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