(1) 计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538130f7b17fcec31c4bfc74b91da3f8.png)
________ ;(2)化简:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3fdeb76beef1b516281799f6b7913c6.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538130f7b17fcec31c4bfc74b91da3f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3fdeb76beef1b516281799f6b7913c6.png)
20-21高一·全国·课后作业 查看更多[1]
(已下线)10.2 二倍角的三角函数
更新时间:2021-11-11 22:27:55
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【推荐2】已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85527d190d4e1d6bac4145d1c716e65e.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00182b50abbb55bc190691eb0eb1d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85527d190d4e1d6bac4145d1c716e65e.png)
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【推荐1】在
中,
,
,
,D、E在边
所在直线上,且满足
,
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f76e37d6e6b182896ccaaa187cfe07.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d41b4a6f5f98cfc3c5e77162ea24c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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【推荐1】已知函数
满足
,若函数
在区间
上单调,且
,当
取得最大值时,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9895a54293f3b66882723ed886fa93b5.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf34406c2beb9db879d550e7da87833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1aa63b3dca2e617afe578f699e77cbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2d21e8c00e2bbbd848c35e007552b64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621dcdcda531ea579ce0af1380e602d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
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【推荐2】若动直线
与函数
与
的图象分别交于
,
两点,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8583fa83793051255455c65ead0137e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/630ad017270096386c4231b10d7bad64.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac35b1e8a952aac4f4cdaaf02d868d04.png)
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【推荐1】设
,则
在
上的值域为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bdeade166f0ac27abee8d6b00e69548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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解题方法
【推荐2】在
中,角
的对边分别为
,若
且
,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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