解题方法
1 . 已知的内角
的对边分别为
,若
,则
( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-08-10更新
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438次组卷
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3卷引用:浙江省浙北G2联盟2023-2024学年高二上学期期中联考数学试题
浙江省浙北G2联盟2023-2024学年高二上学期期中联考数学试题辽宁省葫芦岛市联合体2022-2023学年高一下学期第二次考试数学试题(已下线)6.4.3 课时2 正弦定理-同步题型分类归纳讲与练(人教A版2019必修第二册)
解题方法
2 . 在中,
,则
中最大角的余弦值为
( )
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 在四面体
中,已知二面角
为直二面角,
,
,
,设
.若满足条件的四面体
有两个,则t的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc7f54acef4e40aad465ffe5f8b4b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ea4bd288944d3ba3d6a319de869dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb8219b757bff22ff5c300f8c454d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-08-02更新
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2卷引用:浙江省宁波市慈溪市2022-2023学年高一下学期期末数学试题
4 . 如图,在△ABC中,M为BC边上一点,
,
,
,△ABC的面积为
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a915b911dc28df8cc2e3288aeb521b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b9ddeedeff87f7722aedd6c1109d57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810fee760e06028fb7d37e65db79bfa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5cb63aeea0b37799404c8fec092b21d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/20/4d4a7072-474f-4dc2-844a-7d09be2a8073.png?resizew=222)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 已知
为锐角
的两个内角,满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f466571e6ba408ad50c2cd84d86781.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 . 已知
的内角
的对边分别是
,面积
满足
,则
( )
![](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/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc5b7c43b269b1f482e53628cdfd9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 如图,在
中,D是BC的中点,E是AC上的点,
,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8520a21b909d04f763d0f61dd74bc158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31bff282716d50968c13f80055ba78ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4e66d18949d6940f1b3e5b4206f636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/9/9b658117-adac-466f-a4a6-5e943c6765ec.png?resizew=191)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-07-07更新
|
1766次组卷
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3卷引用:浙江省台州市2022-2023学年高一下学期期末数学试题
名校
解题方法
8 . 正三棱台
中,
平面
,
,则异面直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439cf259dd6137aa31bb99244a04ddfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-07-07更新
|
666次组卷
|
4卷引用:浙江省台州市2022-2023学年高一下学期期末数学试题
浙江省台州市2022-2023学年高一下学期期末数学试题吉林省长春市第五中学2022-2023学年高一下学期期末数学试题河北省石家庄市部分名校2024届高三上学期11月大联考考后强化卷(河北卷)数学试题(已下线)重组4 高一期末真题重组卷(浙江卷)B提升卷
名校
解题方法
9 . 在锐角
中,角A,B,C的对边分别为a,b,c,S为
的面积,且
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c28d53e229fcea80c26b22d9e1a94ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7a71b30063e929dfcb71ae1693149e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-06-29更新
|
767次组卷
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4卷引用:浙江省宁波市北仑中学2023-2024学年高二上学期期初考试数学试题
10 . 设椭圆
的左右焦点分别为
,
,
是椭圆上不与顶点重合的一点,记
为
的内心.直线
交
轴于
点,
,且
,则椭圆
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede935419d69a161bb22fd513647da06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddf9d7c01b6b507a002b6dbc22437380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d445a6fdb348556448b8030cc24d8cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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