在
中,角
所对的边分别为
,且
.
(1)证明:
成等比数列;
(2)若
,且
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/cf081a66e757ea45194c0dee161dbb33.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4a8c2c7845cfb1b094d13e66e0ed87.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb5bac75f36bb1dc5c8190d4dbe681d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d08a8e10d6ff1fd3d91fe4d4ed31352d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
更新时间:2018-12-10 14:26:23
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(1)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea99e6b51b8c3c3f24b1e908545ec653.png)
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解答题-问答题
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较易
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【推荐1】在
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