名校
解题方法
1 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161d39fa1cb0e994941c02bd4ab971b1.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8529a52e32b12244bd535641221e83e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161d39fa1cb0e994941c02bd4ab971b1.png)
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2 . 已知
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9fcaa804011c37873b03ee284504fe.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef966cdd137b3b10e290201b4d17542e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c98ce1bd8a5ffe3e18b4033d4ade5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc282dae4ac9132196ac5d13f63b901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f836697b6e7daec4ab093779fff51923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9fcaa804011c37873b03ee284504fe.png)
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解题方法
3 . 设
是单位向量,且
,则
的范围为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19e9066e6ebe86de2108970c51a8b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44af35a76ebdff0711357aa62324c0e1.png)
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4 . 已知向量
,将
绕原点O沿逆时针方向旋转
到
的位置,则点
的坐标________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66912d83d334ac2e50f4f7dcd360062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e0c2455a9e796bba6861503f0fe31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96cb7ee166966ed0b1605c263e433cf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
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5 . 已知
中角
所对的边分别为
,
,则
的面积
,该公式称作海伦公式,最早由古希腊数学家阿基米德得出.若
的周长为18,
,则
的面积为________ .
![](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/a0f2d50ca5cc415bf6721faf2221d626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c667f76da3658f200fff8eadb24b8e82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f599e58e3e88b9092672126b7a94e94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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6 . 中国扇文化有着深厚的文化底蕴,是民族文化的一个组成部分,其中扇面画有着悠久的历史.某扇面画可看成一个扇环,其示意图如图所示.若
,且该扇环的周长为
,则该扇环的面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a5ccec0e8c65a21a65a5149ef1c01d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00c640bc632356806c12ee45f50be09.png)
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2024-05-08更新
|
406次组卷
|
3卷引用:辽宁省本溪市县级重点高中协作体2023-2024学年高一下学期期中考试数学试卷
辽宁省本溪市县级重点高中协作体2023-2024学年高一下学期期中考试数学试卷河南省驻马店市新蔡县第一高级中学2023-2024学年高一下学期5月月考数学试题(已下线)专题07 一轮复习三角函数(1)--高二期末考点大串讲(人教A版2019)
名校
7 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b729f3bcad3527fd911eb71de25a64f9.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04131553539cb21dc8be6da1cf982dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b729f3bcad3527fd911eb71de25a64f9.png)
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2024-05-08更新
|
546次组卷
|
4卷引用:辽宁省本溪市县级重点高中协作体2023-2024学年高一下学期期中考试数学试卷
辽宁省本溪市县级重点高中协作体2023-2024学年高一下学期期中考试数学试卷广东省佛山市七校2023-2024学年高一下学期5月联考数学试卷广东省四会中学、广信中学2023-2024学年高一下学期第二次月考数学试题(已下线)高一下期末考前押题卷02-期末考点大串讲(人教B版2019)
名校
解题方法
8 . 在
中,已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91c76dcf8b4e58e3252d26be3976abe4.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52881c57c830613ea6fee34072e49329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91c76dcf8b4e58e3252d26be3976abe4.png)
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9 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f451719a2b40e2ed1244c830494cf28.png)
_________________ .(用
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3944cbd5cdb6a81c652fc281733184f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949bc822a2afe033af42e74417b7724b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f451719a2b40e2ed1244c830494cf28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
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10 . 已知平面单位向量
,满足
,设
,
,向量
,
的夹角为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e888ea14da893971e13858945bf0cd.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63592e1ee30e40acea95930b62c33e27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d00fee56b3cf17ca7b59fe62bbdec8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48671941474904daaa9fd4fee6a9eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e888ea14da893971e13858945bf0cd.png)
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