名校
1 . 近年,我国短板农机装备取得突破,科技和装备支撑稳步增强,现代农业建设扎实推进.农用机械中常见有控制设备周期性开闭的装置.如图所示,单位圆O绕圆心做逆时针匀速圆周运动,角速度大小为
,圆上两点A,B始终满足
,随着圆O的旋转,A,B两点的位置关系呈现周期性变化.现定义:A,B两点的竖直距离为A,B两点相对于水平面的高度差的绝对值.假设运动开始时刻,即
秒时,点A位于圆心正下方:则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
______ 秒时,A,B两点的竖直距离第一次为0;A,B两点的竖直距离关于时间t的函数解析式为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14902784a88061b7c1d5b613d241e5b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d50d28ca86c403c7ee8848a8ded39f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49a4c11d41372175ba3541a44c3376b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aeb9a94e392f6759b18abed89aacc5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14902784a88061b7c1d5b613d241e5b.png)
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2024-04-26更新
|
1357次组卷
|
5卷引用:广东省佛山市2024届高三下学期教学质量检测(二)数学试题
广东省佛山市2024届高三下学期教学质量检测(二)数学试题(已下线)压轴题07三角函数与正余弦定理压轴题9题型汇总-2广东省汕头市潮阳实验学校2023-2024学年高一下学期期中考试数学试题(已下线)【公式证明】和差公式 口诀处置江苏省前黄高级中学2024届高三下学期三模适应性考试数学试题
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解题方法
2 . 已知函数
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cc8f08c6ada5499a260607a4c908d7.png)
A.若动直线![]() ![]() ![]() ![]() ![]() |
B.若动直线![]() ![]() ![]() ![]() ![]() |
C.若动直线![]() ![]() ![]() |
D.若![]() ![]() |
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2024-04-19更新
|
771次组卷
|
2卷引用:山东省聊城市2024届高三下学期模拟考试(二模)数学试题
3 . 计算
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9d3e20cf9ff0a9eecf4604f7d46510.png)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 若
则向量
,
的关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3419cab86b9054535d3ff08fa1a98cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
A.平行 | B.重合 | C.垂直 | D.不确定 |
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5 . 已知函数
的最小正周期是
,函数
的最小正周期是
,且
,对于命题甲:函数
可能不是周期函数;命题乙:若函数
的最小正周期是
,则
.下列选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910aabcef0ff657a3727d1246799274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9a724b59c890095baa5cb73e267c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/609b41d00fb7f8617902e51c9c8e7d22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9275bd8ce17fcc4a786510b008414ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a91e0f6f7ef132f731cf3b26bd6b3fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d3477d0762fe87e77a86701e574922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d3477d0762fe87e77a86701e574922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155c5f3a5c55e0c95191c5a893f63062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd7453ee7fae68eafc2c47cc2ffd0b0.png)
A.甲和乙均为真命题 | B.甲和乙均为假命题 |
C.甲为真命题且乙为假命题 | D.甲为假命题且乙为真命题 |
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名校
6 . 如图,正方形
的边长为4,
. 若
,则
的值可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d0ce2e815d003d307b9466c233949a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888d73cee46ca290a32011f7a876c03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592af988feedcd63e0fa602c8594619a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/16/defc027d-4c63-400a-a1cf-21df92ce266a.png?resizew=153)
A.12 | B.15 | C.32 | D.![]() |
您最近一年使用:0次
2024-04-16更新
|
207次组卷
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2卷引用:辽宁省辽阳市集美中学2023-2024学年高一下学期4月月考数学试题
解题方法
7 . 如图,
分别是等腰梯形
的边
上的动点,
,其中
为定值,
,设
,其中
.
,求出
的表达式;
(2)证明:
的余弦值与
的取值无关;
(3)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ced9844fe2e052c70486af0740afa63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596d41b6556f383445536d1c534ac182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f07948e9258b482a2164ac871f90f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a18fec3e4a4fbc7b3e0e037ce650023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d91513d2e546a5a0b5fd42379db8df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e72cf7374a65ced433b6fa113ef57d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e2be3e9225c71609248299caa49432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192c2f1059f6e05d44df048f5fdca04b.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7023ec0f513c7d0ef86859a5ede54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5db625151987f893816de66b15d9e699.png)
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解题方法
8 . 如图,已知AB是圆
的直径,
是圆
上一点,
,点
是线段BC上的动点,且
的面积记为
,圆
的面积记为
,当
取得最大值时,
( )
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a412283b2b527b9fa30fdadf662decbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59880e470359d8e9faf6ae5ce155cf2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a39f04d1c3551403dbbed35deb01232.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 如图所示,海尔学校要在操场上一个扇形区域内开辟一个矩形花园ABCD,现已知扇形圆心角为
,扇形半径为10
,则该矩形花园的面积的最大值为__________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
您最近一年使用:0次
解题方法
10 . 如果![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75cb7615ca33b128496114742a1f2dd.png)
(1)求证:
;
(2)若
为三角形的三个内角,判断
与
的大小关系,并予以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75cb7615ca33b128496114742a1f2dd.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e10e76a8cf6e3eb92e57ee971a218a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e263f0291e3df8b6fb866abaf3f4576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbeb449ec91ac7e5798e3b347fd0d107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a25e473dce119ddd92f32fef1dc576.png)
您最近一年使用:0次