在锐角
中,
,
,
分别为角
、
、
所对的边,且
.
(1)求角
.
(2)
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/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/bba4f341a8ff41db3a4ed04e968e0fce.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036b23c94e305faaa1283996edc5b30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff7e62312dbd1cd5b50a6dc7fdfc166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
更新时间:2023-12-23 00:10:40
|
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解答题-问答题
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适中
(0.65)
【推荐1】在△ABC中,内角A,B,C的对边分别为a且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c7a70cd6ddaba6e441caffb5a59441.png)
(1)求角C的大小;
(2)若
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(1)求角C的大小;
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解题方法
【推荐2】如图,在
中,角
的对边分别为
,且满足
,线段
的中点为
.
![](https://img.xkw.com/dksih/QBM/2020/4/14/2441311607185408/2442599023927296/STEM/a1b364694d894a5a8ba8b9ad7498e5df.png?resizew=266)
(Ⅰ)求角
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(Ⅱ)已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0ae8e92dd3119d41f2c830ea526516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ace74bfb716753490ebe0e740ff5baa.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2020/4/14/2441311607185408/2442599023927296/STEM/a1b364694d894a5a8ba8b9ad7498e5df.png?resizew=266)
(Ⅰ)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(Ⅱ)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a12c3ca7c821137d233b6dc7c0cdd08.png)
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(0.65)
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解题方法
【推荐1】已知
中,角
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(1)若
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(2)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67336ccd79b321083fa8821e524c7467.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85b8eb4f3e02fa8ab3b49def8958444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5daacfca03b233bee267ed7410cd43c7.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/101678e608c85bd89a7e0ae80d896646.png)
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解答题-问答题
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适中
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名校
【推荐2】奔驰定理是一个关于三角形的几何定理,它的图形形状和奔驰轿车logo相似,因此得名.如图,P是
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(2)若P是锐角
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6304b350f56f7ee6a0c51d9ece5ee7db.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219679f2c28a0418f62d9861b7aec02f.png)
(2)若P是锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568c6a1484da196de32bd04994d9d3d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
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【推荐3】已知
,
,函数
.
(1)当
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(2)已知
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的对边分别为
,若
,
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad92008780be291b5ed5508f47f458d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa1ac1bb3e25169cfae03d643e5ae98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be2dd167392a87d125bfd91ab3cb396.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知
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解答题-问答题
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(0.65)
解题方法
【推荐1】在△ABC中,内角A、B、C所对的边分别为a、b、c,
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(2)若CD为AB边上的中线,且
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b783a32261c40fc9c340d68c8cb6a49.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
(2)若CD为AB边上的中线,且
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【推荐2】△ABC的内角A,B,C的对边分别为a,b,c.已知asin(A+B)=csin
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