解题方法
1 . 如图,一个半径为2的水轮,圆心
距离水面1米,水轮做匀速圆周运动,每分钟逆时针旋转4圈.水轮上的点
到水面的距离
(米)与时间
(秒)满足
(
),则( )
![](https://img.xkw.com/dksih/QBM/2021/6/21/2747912123908096/2782008720318464/STEM/f3470b09-d48e-40d9-879a-cf8883a6d0ad.png?resizew=237)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73828e422f245d2489e91770f3d84483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://img.xkw.com/dksih/QBM/2021/6/21/2747912123908096/2782008720318464/STEM/f3470b09-d48e-40d9-879a-cf8883a6d0ad.png?resizew=237)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 已知同一平面上的
和
分别是边长为1和2的正三角形(其中
,
,
和
,
,
均按逆时针排列),则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3728d1c17bd92866025193c752121a7.png)
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3 . 在①
,②
,③
的面积为
这三个条件中任选一个,补充在下面问题中并求解.
问题:在
中,
,
,线段
中存在一点
使得
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9ba3e96c29d145e59c5afe602ec8d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40560ea08d6cd8c1d4d9661ee6faaa3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75096deb06fa2aeaace0ec13f59c9ef1.png)
问题:在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ddd49625097d0a78df7170be4f882e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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解题方法
4 . 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 |
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名校
5 . 已知△ABC的面积等于2,AB=1,当△ABC三条高的乘积取最大值时,sinC的值为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-08-09更新
|
879次组卷
|
2卷引用:浙江省衢州市2020-2021学年高一下学期期末数学试题
6 . 如图是第24届国际数学家大会的会标,是根据中国古代数学家赵爽的弦图设计的.已知图中正方形
的边长为1,
,则小正方形
的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/1035c923-8bad-417a-a30c-2e918d093f3b.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e66ed02b303ae107edefdb6ac3bad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/1035c923-8bad-417a-a30c-2e918d093f3b.png?resizew=151)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 如图是函数
(
,
,
)的部分图像,
,
.
![](https://img.xkw.com/dksih/QBM/2021/6/21/2747912123908096/2782008720793600/STEM/4ca83aee-ae5a-4cf6-8dfa-85081012d54b.png?resizew=236)
(1)求
的解析式;
(2)将
的图像向右平移
,得函数
,记
,求
的单调递减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5e2a383cb47eb87493e86c8c40caf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a61aaa4794ba51dc328aedbbc47c35c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4741499d79059bc1418646b61d8edae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/618a380b8019a022164bf292c9736bd9.png)
![](https://img.xkw.com/dksih/QBM/2021/6/21/2747912123908096/2782008720793600/STEM/4ca83aee-ae5a-4cf6-8dfa-85081012d54b.png?resizew=236)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7863b54185da5a3f1a765e1aa0577e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
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8 . 截止至目前,中国已经建成全球最大的5G网络,无论是大山深处还是广袤平原,处处都能见到5G基站的身影.如图,某同学在一条水平公路上观测旁边山顶上的一座5G基站
,已知基站
高
,该同学在公路
、
两点处测得基站顶部
处的仰角分别为
、
,且
.该同学沿着公路的边缘从
处走至
处一共走了
.则山高
为__________ m.(该同学的身高忽略不计)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c758c27bec97c234d1d818c40f3d3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05a068e177a98973fc9afa1f679aec24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0158bd3555ae86fd6ccc5603b243b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2021/6/21/2747911929004032/2782004262797312/STEM/164e6975-168c-4248-a13e-add39382187c.png?resizew=281)
您最近一年使用:0次
2021-08-08更新
|
667次组卷
|
3卷引用:浙江省温州市2020-2021学年高一下学期期末数学试题(A卷)
解题方法
9 . 设
的内角
,
,
的对边分别为
,
,
,已知
,
.
(1)求边
的长;
(2)在①
,②
,③
,这三个中任选一个作为补充条件,判断
的面积
是否成立?说明理由.
注:如果选择多个条件分别解答,按第一个解答计分.
![](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/783d6adfa8fb1352679c5185258d842a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f19eabf190c55447f8d943f95b7f311e.png)
(1)求边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8c65bea2c80af038768b74250c694e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd87124b77b7accfa45d21814b3cca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76a6df2973928e7dd58e4a06d52d4173.png)
注:如果选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
解题方法
10 . 已知平面向量
,
,
满足
,
,
.
(1)求
的值;
(2)若
,当
取得最大值时,求以
,
为邻边的三角形面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da032e305b3ad38754e2d52b8ca086bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6500d23b2750afcb9e307c85a5e62846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0613b76e7ee7833efca866981bd89ee.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9667f6c0eac65be9c5e10f966af41f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a45b7c9e771eeed259849052e2393db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7b78b446c05c9aea5bf87c7b17258a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
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