![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2776c3a56a586157a921befeb02ee91f.png)
(1)求角C;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f002f960ec07ea229ed243e2d991d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
21-22高三上·河南信阳·阶段练习 查看更多[3]
河南省信阳市淮滨县第二高级中学2021-2022学年高三上学期第一次月考理科数学试题江西省丰城市第九中学2023届高三复读班下学期开学质量检测数学(文)试题(已下线)第五篇 向量与几何 专题14 三角形射影定理 微点1 三角形射影定理(一)
更新时间:2023-02-01 09:05:57
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【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd7f751edb29d146124a83fb95308ca.png)
(1)求函数
的最小正周期;
(2)求函数
在
上的值域及取得最大值时
值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd7f751edb29d146124a83fb95308ca.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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【推荐2】已知函数
,
.
(Ⅰ)求
的最小正周期;
(Ⅱ)若
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fde3fca388ee274ad878772c1628d91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f1a3feca6218955446108ebad0a524.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae8061a724c6c94d3fcb6d095293220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3600dd5be15ec2bf826b28d0ca8b41bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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【推荐1】在
中,a,b,c分别是角A,B,C的对边,若
,
(1)求B;
(2)若
面积的最大值为
,求b.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae7a8513eb511505c41d81d53c3f88e.png)
(1)求B;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a8b76e36783a69d14ec54af82c7df0.png)
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【推荐2】记
的内角A,
,
的对边分别为
,
,
,已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f8ca58c08e4ba6fc9d0ccc0536a325d.png)
(1)求证:
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/5f8ca58c08e4ba6fc9d0ccc0536a325d.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988b7e964e313579ab8869d67d5be007.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6367f273f01b4301f16200b1e9076a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1311f32edf13f8caee5edb03f24a7ba.png)
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【推荐1】
的内角A、B、C的对边分别为a、b、c,已知
,
,
,求A和a.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985ea6843f52e2edff7d4ef61d822a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7359fc2c09994eedb4447056ee7ab6cf.png)
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【推荐2】(1)若
,求
的值;
(2)在
中,内角
,
,
对边的边长分别是
,
,
,已知
,
,
的面积等于
.求
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9576aa8eef2c2c85b8c3bc071e53c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ccee06fb29c55cb1fd7fd3d30df1c9.png)
(2)在
![](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/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e38f550e95b2950f91e8ec1798b94109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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【推荐1】在
中,角A,B,C所对的边分别是a,b,c.已知
,
,
.
(1)求
与c的值;
(2)求
的面积;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86a1b1785b69690b7e5535b69447298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284a563413dc0532138fb2a64db8cc2b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】在①
,②
.③
这三个条件中任选一个,填在以下的横线中,并完成解答.
在
中,角
所对的边分别是
,且__________.
(1)求角
的大小;
(2)若
,点
满足
,求线段
长的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba256f940fcced2d2b09f3fdf25c634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d563d489179d7af4a53bd5260855bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b5e80c6a00071e6bd095045c95ed4d.png)
在
![](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)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2bea3227e0c4152d5f60bbff4086275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66165a4813c742ee07a2b4a96887c458.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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