(1)求值:
.
(2)已知
,
,且
,求角
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1ce56f8d639b2207d6b001155b7013.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6b1670b2b446ace5bc12d7385b8e78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57276c4d551ab2b1b5f8852d45697d53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed53925cace8212e87a4d3bad6463718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
22-23高一下·广东佛山·阶段练习 查看更多[2]
更新时间:2023-09-16 08:03:59
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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
的内角
所对的边分别为
,且
,
.
(1)若
,求
的值;
(2)若
的面积
,求
的值.
![](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)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55493e331f88d3d1c396e92b46c97ecd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c181f86de3c96a7ef7a1a04c3a438f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2eb41913d12742fa72f7d29da3c295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
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适中
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【推荐2】设
,
,且
,
.
(1)求
的值;
(2)试比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f55b8836b41be612a52ca9caf97006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e744af0f65e797a35d976c20f2dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f18e786a0b24fff3535d3c96f7793dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41b1b221a4ba6a5ec12b422e0df23915.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
(2)试比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dd0c52aca1675c17b9a019aa7901e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
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解答题-计算题
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适中
(0.65)
【推荐1】求值:
(1)tan 405°-sin 450°+cos 750°;
(2)
.
(1)tan 405°-sin 450°+cos 750°;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57297354f702d7a33394eb60df4b3696.png)
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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】设
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(1)证明:
;
(2)
,利用(1)的结论计算
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f687593cb4ecef31667bf2320fdfe000.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c77a9f53561c3d49ef466c38552d6ee7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57a596bcee5bbe4aeb6805f7a4a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585b706595c3f0ad6ecec5ea9d130e36.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐1】在
中,内角
,
,
的对边分别为
,
,
,已知
.
(1)求角
;
(2)若
,
是
的中点,
,求边
.
![](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/3eaa5dd0bb3766c0f0e62d6f2d2aa262.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9ad150cb1e4cd8977d4cc3d99be17c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐2】设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bba0ecf8837546008ceb7498a2276c2.png)
求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bba0ecf8837546008ceb7498a2276c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec2e2a591ed4d63a8486056dc983649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3b577296f444b0ecbab6c730875e30.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】在
中,有
,其中
分别为角
的对边.
(1)求角
的大小;
(2)设点
是
的中点,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18f4e1a24fc4a8672e39bfdf5e2e1af.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9ad150cb1e4cd8977d4cc3d99be17c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1810555c0c28fe352841322b85bbc6.png)
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适中
(0.65)
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【推荐2】已知
且
求
及
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f1100c19e87ced3401565e9a632319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5b45c3bed2e92123330d22bf32777f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8cdbb75f286bbddb6a396bfcc6bbe7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682a1ed4ea14bd7d6cc4464a9163741b.png)
您最近一年使用:0次