在
中,角
的对边分别为
且满足
.
(1)求角C的大小;
(2)若
,D在线段
上,且
,求CD的长.
![](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/d4fedc32491b66c5e6f7c11d3931ab8a.png)
(1)求角C的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c2831fe21a5f34e06f87de5f8f9a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e76c8693a0a4e63964dd965786d5cf24.png)
更新时间:2022-11-30 18:54:07
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【推荐1】在
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(1)若
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(2)若
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【推荐2】在
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(2)已知
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(1)已知
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(2)已知
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【推荐1】在
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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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(1)求
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(2)若
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【推荐2】在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
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(1)求角
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【推荐1】已知△
的三个内角
所对的边分别为
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,且
.
(1)求∠B的大小.
(2)若
,
,求△
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/8f7cc6cc62bce8cd46deac8897e96399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252db858963d4e90be6243c31109fe17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e32b6dc307d12bbd6b850a67b0599620.png)
(1)求∠B的大小.
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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【推荐2】设
的内角A,B,C的对边分别为a,b,c,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50dcf692b54ea9c3ee09f7e7a595295.png)
(1)求
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的中点,
,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50dcf692b54ea9c3ee09f7e7a595295.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4239165ee886662653d8da4c567a79d.png)
(2)若点D为边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99fa06cf5fba8b397b078fdef933156a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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