在
中,角
,
,
所对的边分别为
,
,
,
.
(1)求证:
;
(2)若
,求
.
![](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/3c4497635b33adc89d4669439236abbe.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1871203419c14bbe078f220b302343.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97757fd876c0ea02758e3beceb64a5f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32f2d4d1d2c16c54b2caef17840bfcb.png)
22-23高三下·河北唐山·阶段练习 查看更多[2]
更新时间:2023-06-11 19:47:05
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相似题推荐
解答题-问答题
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适中
(0.65)
【推荐1】如图,测量河对岸的塔高
,可以选取与塔底B在同一水平面内的两个测量基点C和D.现测得
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(1)求
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(2)求塔高
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042e1f1e7a1f4cc110651dd8eb165eaf.png)
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(1)求
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(2)求塔高
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
【推荐2】在①
,②
,③
三个条件中任选一个补充在下面的横线上,并加以解答
在
中,角
,
,
的对边分别为
,
,
且______,点
是
边上的一点,且
,
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085423182be41925c494f7a3d52a2d1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b63f13c587461426432358d5480438a.png)
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在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](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)
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解答题-应用题
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适中
(0.65)
名校
解题方法
【推荐3】宜昌卷桥河湿地公园是一幅美丽的田园湿地画卷,它将自然山体、阳光草坪、亲水草滩、芒草湿地、溪谷密林等有机融合,设计的十分精致优美.为了迎接2023年的春天,公园里开辟了一块等腰直角三角形
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2352fd3ab9597b8256a41675bc0404bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cfd2cfa70c66adb6440ed5f627b12ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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(2)种植粉色油菜的成本是100元/平方米,求种植粉色油菜的最少费用.
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解答题-问答题
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适中
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解题方法
【推荐1】如图所示,平面四边形BCDE为某金鱼池区域,△ABE为观光区域,准备在AB、BE、AE三条边上修建观光路,已知∠BCD=∠CDE=∠BAE=
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(2)求观光路长度总和的最大值(精确到0.1米,不考虑道路的宽度).
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/395424943f098d2c9a83d80039018429.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/4c6c8569-d161-42b9-918d-e67a0c3b1ed9.png?resizew=154)
(1)求四边形BCDE的面积(精确到0.1平方米);
(2)求观光路长度总和的最大值(精确到0.1米,不考虑道路的宽度).
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解答题-问答题
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适中
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解题方法
【推荐2】在△ABC中,角A,B,C的对边分别是a,b,c,若asinA=(a-b)sinB+csinC
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解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】已知在
中,角
所对的边分别为
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的取值范围.
![](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/86c502a3b391b934bfd218065f4bbbee.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b544ef502d80fdb50e31efad43609b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab15e2c7c0964bd4153c49c6ee9edea1.png)
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解答题-问答题
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适中
(0.65)
解题方法
【推荐2】在锐角
中,角
,
,
的对边分别为
,
,
,
的面积为
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,
.
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的大小;
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周长的取值范围.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49b13a48936af70d16d940c926c1b42.png)
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(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
您最近一年使用:0次