1 . A,B,C为
内角,x,y,z为实数,求以下三式中恒成立的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad95998658d2ab5aad3714e2276bb6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5870e3149fc4cec4c7066ea95db8e5c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad95998658d2ab5aad3714e2276bb6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5870e3149fc4cec4c7066ea95db8e5c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df217a60bbc39645dd98a10ebc809e5.png)
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名校
2 . 已知
是第二象限角,且
,
是第一象限角,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbe2212c10c3da621f550e8c6409bd7.png)
(1)求
,
;
(2)若对于任意的角
都有
成立,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92b5f617460604b942a9c302b3a41ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbe2212c10c3da621f550e8c6409bd7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
(2)若对于任意的角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ada15d54503b8770cdf8d73f7bb2d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f372b43f190f84b3bbdf423102fd624.png)
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23-24高二上·上海·课后作业
解题方法
3 . 如图是一个W形的霓虹灯,每边长都是2m,每相邻两边的夹角都是
.试建立适当的平面直角坐标系,并写出此霓虹灯的每条边在这个坐标系中的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996bf3d35b6763cbc1a423b13a9df2dd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/0574c214-0883-4e7d-ade1-d67f10791ebb.png?resizew=75)
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4 . (1)求点
到直线
的距离;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76095b03d243fead89a6493614e4b68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b428ff0f74f51a964a0e871e3a9e2a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16bc37a398b3a0f1551f10f4712af729.png)
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解题方法
5 . 甲乙两名同学周末去游乐场游玩,甲同学去坐摩天轮,乙同学因为恐高只能在休息区P处等待.如图,已知摩天轮的半径为40米,按逆时针方向旋转且每20分钟转一圈.摩天轮开始转动后甲从最低点M经过50秒恰好转到A处,此时乙在P处看甲的仰角为15°,又过了200秒转到B处,此时乙在P处看甲的仰角为60°,摩天轮与底座的基点H及休息区P在同一个竖直的平面内.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/4ca58a19-d497-4057-a96a-018c09122446.png?resizew=197)
(1)求休息区P与摩天轮底座的基点H之间的距离;
(2)求摩天轮的最高点到地面的距离.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/4ca58a19-d497-4057-a96a-018c09122446.png?resizew=197)
(1)求休息区P与摩天轮底座的基点H之间的距离;
(2)求摩天轮的最高点到地面的距离.
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6 . 定义![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8206cb593ff6539920f6e1b7920e8249.png)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991ca2b78f029ccd03b22a9f2f436998.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8206cb593ff6539920f6e1b7920e8249.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991ca2b78f029ccd03b22a9f2f436998.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6ac350a66f19f0b60ec9aa48d7108f.png)
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7 . 若存在
同时满足条件①
、条件②
、条件③
、条件④
中的三个,请选择一组这样的三个条件并解答下列问题:
(1)求
的大小;
(2)求
和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12bbebdbc01a3ae3140e5b29af671c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cdf1876ecd02dce5532eb585297342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85e4e20a4b06e6df0d5acada3d2ea48f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ef6f920cf01e61596caa2243af1619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6cf53ea977a1dda62c7fe3a664c47b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1311f32edf13f8caee5edb03f24a7ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2021-11-11更新
|
298次组卷
|
2卷引用:北京市第五十七中学2021-2022学年高二上学期期中检测数学试题
8 . 热带海面受太阳直射,海水温度升高,并蒸发形成水汽升空.而周围较冷的空气又流入补充,然后再上升.如此循环,使整个气流不断扩大形成“气流柱子”,这便是人们所说的台风,是危害极大的灾害性天气.据气象检测,某海面上产生了一股台风,台风中心(记作点
)位于某海港港口(记作点
)的南偏东
方向,
与
之间的距离为
千米.台风中心正以
千米/小时的速度沿北偏西
的方向移动,距离台风中心
千米的圆形区域内均会受到台风的侵袭.
(1)经过
小时后,港口
距离台风中心的距离是否超过
千米?
(2)试问港口
是否会受到此次台风的侵袭?若会,若港口
受到侵袭的持续时长;若不会,说明理由.
(参考数据:
)
![](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/79a97bb4dcfab4ec7539bc783d563c49.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/97f6063007c9ff8e8eb5b5cb5d14f4ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d5c0b0dee65f51e0a174080b0017d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3779b4ea5477aebfe85113b0de1d60.png)
(1)经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3779b4ea5477aebfe85113b0de1d60.png)
(2)试问港口
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460317e7c26f95b9b29cfe1a89b796d6.png)
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解题方法
9 . 已知
,
,若
,且
在
上为减函数.
(1)求函数
的最小正周期;
(2)求实数a和角
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b679eef43089a44733a13a2f2499a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25104a0f6ae94a86bf4dea610e1a9710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa793195a80c35a3e4a4d605b63675cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e8a607883e46aa52f2cad51a5ddacff.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求实数a和角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
20-21高一下·江苏南通·期中
名校
10 . 已知向量
,
,其中
.
(1)若
,且
,求
的值;
(2)设函数
,当
时,是否存在整数
使得
的值域为
?若存在,请求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f310462a3548afa750007a5614889c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d665aac8275eb07169842ef0c4ebb55b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a4a549ed1d52de7b6b60827e3802d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f44474f48d66d0083fcadb6222c2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d57ebb3f3887aab618920750092dd6e.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a5be152df7a82b3d4cbc8561230a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e62ca9beef3cf514b4f99092b70038ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b67284ca9982944fd8bbe0a49102669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
您最近一年使用:0次
2021-08-27更新
|
724次组卷
|
3卷引用:江苏省南通市如皋市2020-2021学年高一下学期期中数学试题
(已下线)江苏省南通市如皋市2020-2021学年高一下学期期中数学试题福建省三明市第二中学2022届高三上学期阶段2考试数学试题苏教版(2019) 必修第二册 必杀技 专练2 开放题(含结构不良题)专练