名校
1 . 下列说法正确的有( )个.
①若角
与角
为锐角
的两个内角,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b48895daa87c296d961bfd0d4fd386.png)
②函数
的图像的对称中心为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b30178cf2a252263a371af19101fa6b.png)
③周长为8,面积为3的扇形所对的圆心角为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150c57a06c477de15520c289e2adabf1.png)
④第一象限角不都是小于
的角,但小于
的角都是第一象限角
⑤若
,且
,则
①若角
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b48895daa87c296d961bfd0d4fd386.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d3744aa1b193855b1e8c79c3acf78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b30178cf2a252263a371af19101fa6b.png)
③周长为8,面积为3的扇形所对的圆心角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150c57a06c477de15520c289e2adabf1.png)
④第一象限角不都是小于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
⑤若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140d770d2bcf921a2bc29267fa69aafc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b06f37bd322af6e273ceb66bac49a716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9604d031a1bad6472ba6b199576b5f.png)
A.1 | B.2 | C.3 | D.4 |
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2 . 在△ABC中,角A、B、C所对的边为a、b、c.若
,
,
,则角C=____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82986ab38a4ae58593191ccae2a44f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5cac72465efefbbaf4e063836ed7a2.png)
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2023-07-05更新
|
301次组卷
|
6卷引用:安徽省阜阳市2020-2021学年高一上学期期末数学试题
安徽省阜阳市2020-2021学年高一上学期期末数学试题上海市控江中学2018-2019学年高一下学期期末数学试题上海市控江中学2022-2023学年高一下学期期末数学试题(已下线)上海市高一下学期期末真题必刷01-期末考点大串讲(沪教版2020必修二)(已下线)考题猜想01三角-期末考点大串讲(沪教版2020必修二)(已下线)上海市高一下学期期末真题必刷02-期末考点大串讲(沪教版2020必修二)
3 . 元宵节是中国的传统节日之一.要将一个上底为正方形ABCD的长方体状花灯挂起,将两根等长(长度大于A、C两点距离)的绳子两头分别拴住A、C;B、D,再用一根绳子OP与上述两根绳子连结并吊在天花板上,使花灯呈水平状态,如图.花灯上底面到天花板的距离设计为1米,上底面边长为0.8米,设∠PAC=θ,所有绳子总长为y米.(打结处的绳长忽略不计)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712444708528128/2718985807650816/STEM/5eb85ed5-9948-4eb3-97b2-682f7e874f70.png?resizew=270)
(1)将y表示成θ的函数,并指出定义域;
(2)要使绳子总长最短,请你设计出这三根绳子的长.(精确到0.01米)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712444708528128/2718985807650816/STEM/5eb85ed5-9948-4eb3-97b2-682f7e874f70.png?resizew=270)
(1)将y表示成θ的函数,并指出定义域;
(2)要使绳子总长最短,请你设计出这三根绳子的长.(精确到0.01米)
您最近一年使用:0次
4 . 如图,在四棱锥P-ABCD中,已知PA⊥平面ABCD,且四边形ABCD为直角梯形,∠ABC=∠BAD=90°,AB=AD=AP=2,BC=1,且Q为线段BP的中点.
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932303732539392/2933791275737088/STEM/75e64e92c2114d388dd8c939335e6601.png?resizew=174)
(1)求直线CQ与PD所成角的大小;
(2)求直线CQ到平面ADQ所成角的大小.
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932303732539392/2933791275737088/STEM/75e64e92c2114d388dd8c939335e6601.png?resizew=174)
(1)求直线CQ与PD所成角的大小;
(2)求直线CQ到平面ADQ所成角的大小.
您最近一年使用:0次
2022-03-11更新
|
393次组卷
|
4卷引用:上海市嘉定区2021届高三三模数学试题
上海市嘉定区2021届高三三模数学试题(已下线)考向24空间向量与立体几何-备战2022年高考数学一轮复习考点微专题(上海专用)上海市交通大学附属中学2022届高三下学期开学考数学试题上海市2023届高三下学期开学摸底数学试题
名校
解题方法
5 . 如图,已知点
在圆柱
的底面圆
上,
为圆
的直径,圆柱
的表面积为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/6e2cce4d-deb5-42da-b6a4-32ed56f2ec11.png?resizew=233)
(1)求异面直线
与
所成角的大小;(结果用反三角函数值表示)
(2)由点
拉一根细绳绕圆柱侧面到达
,求绳长的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3f6ea3c6c31540c0b9b71567f30789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701f3b0e2bedfe5195443459072d798e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701f3b0e2bedfe5195443459072d798e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3f6ea3c6c31540c0b9b71567f30789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7956978149755527d04366ea3cd72c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211f488d43bc97155b6f875ddb33520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e69465f706e6dc73dcfd12b7ba6028.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/6e2cce4d-deb5-42da-b6a4-32ed56f2ec11.png?resizew=233)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9756b7c2a9f0cb5a1b025ad4821abdcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(2)由点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0758f3ff9f1f7109024c1ef65536c58.png)
您最近一年使用:0次
2022-10-20更新
|
273次组卷
|
3卷引用:上海市晋元高级中学2021-2022学年高二上学期10月月考数学试题
解题方法
6 . 求证:对任意的
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209559aca6bf32705588b6a40e0b7320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129dcd8a7c5e024790ea5f08712b3ce2.png)
您最近一年使用:0次
7 . 如图,在多面体
中,四边形
是边长为2的菱形,
,四边形
是正方形,平面
平面
.
![](https://img.xkw.com/dksih/QBM/2021/11/12/2849522401304576/2851283024764928/STEM/096c88d2a1ac414abe3ca4b2b26a5eff.png?resizew=251)
(1)证明:平面
平面
;
(2)求多面体
的体积;
(3)若点
是线段
上的一点,且满足
平面
.求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc10836365465745c944ddfb10b21f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b6711e6dd48be6cf8fa52926924d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2021/11/12/2849522401304576/2851283024764928/STEM/096c88d2a1ac414abe3ca4b2b26a5eff.png?resizew=251)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc6db50a9709c3f4d84eee7bdf1250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0492b25f10ae45c39f8e9838519259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19fe435f4b926f50e192aa559e5012db.png)
您最近一年使用:0次
名校
解题方法
8 . 将函数
的图像绕坐标原点逆时针方向旋转角
,得到曲线
.若对于每一个旋转角
,曲线
都是一个函数的图像,则
的最大值为__ (结果用反三角函数表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9f5516b5d2a682a40ed75cf8e41399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d129f72794d03b695b1c7fa39c55969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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9 . 如图所示,甲船在距离
港口24海里,并在南偏西20°方向的
处驻留等候进港,乙船在
港口南偏东40°方向的
处沿直线行驶入港,甲、乙两船距离为31海里.
![](https://img.xkw.com/dksih/QBM/2021/6/29/2753293086367744/2781000254832640/STEM/f6c277da-af37-4f72-a560-65fae21b6162.png?resizew=236)
(1)求
的大小;
(2)当乙船行驶20海里到达
处,接到港口指令,前往救援忽然发生火灾的甲船,此时甲、乙两船之间的距离为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2021/6/29/2753293086367744/2781000254832640/STEM/f6c277da-af37-4f72-a560-65fae21b6162.png?resizew=236)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
(2)当乙船行驶20海里到达
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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2021-08-07更新
|
321次组卷
|
3卷引用:上海市闵行区(闵行中学、文绮中学)2020-2021学年高一下学期期末联考数学试题
解题方法
10 . 记E,F分别是正方形ABCD边AD和BC的中点,现将△
绕着边BE旋转,则在旋转过程中( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
A.AE与BF不可能垂直 |
B.AB与DF可能垂直 |
C.AC与AF不可能垂直 |
D.AF与DE可能垂直 |
您最近一年使用:0次