1 . 重庆市酉阳山正阳楼现已竣工,它的建筑风格独特,融合了传统与现代的元素,现已成为新的网红打卡地.黔江中学高一21班某同学周末参加户外实践活动,为了测量楼高
,在
处测得楼顶
仰角为
,向右前行25米到达点
,此时测得楼顶
的仰角为
,梯步DF长为2.7米,坡度(即坡面的垂直高度
和水平宽度
的比)为
,则楼高为
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da080fd41cf18224a1b4433e5d3a2b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32aa5ec1a5466d6a7587c41ddb2becfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db20862b954cd1886f4765657a46d91c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e78ef615b8eb577818081e8a515fe473.png)
A.24米 | B.23.5米 | C.23.65米 | D.22.65米 |
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解题方法
2 . 已知向量
,
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2595e43960d4180146fbdf451f9c91c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb030e5507ab3370d259e7bd47a4e980.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e07ce0ae5da3215435fe8cee6bb4f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 设
,
,
则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c5748fb8d839ae50cdb0faf6adaf41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87bd9f5db8b97abf9bdd15b8efb6c64d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db65c5fa71af60d067f32e1a70774cd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 设数列
的前
项的和为
,若对任意的
,都有
,则称数列
为“超级数列”.已知
是首项为正数、公比为
的等比数列,若
为“超级数列”,则公比
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5f09b3177347a65b656568909ac14e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b2c86af4416911af577d14afa08740d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 已知
轴上一定点
,和抛物线
上的一动点
,若
恒成立,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba61ef91e5827a569ec11a681efa809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f29793c6a1016226ce22347d39f88f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 下列说法正确的序号是( )
A.在回归直线方程![]() ![]() ![]() |
B.利用最小二乘法求回归直线方程,就是使得![]() |
C.已知![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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7 . 如图,已知四边形
是平行四边形,
分别是
的中点,点P在平面
内的射影为
与平面
所成角的正切值为2,则直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1457d2e76a5b86de1abf121c51eb9d35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0a09ed9c929979697fa393e01940aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 已知函数
,则“
”是“
的图象在区间
上只有一个极值点”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/067c2bb74b8322202dd05204fe21ce36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/469f6ce94de5695adaaadb8ecd107ea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c449be2ce0978ecda972d6824f854c10.png)
A.充分条件 | B.必要条件 | C.充要条件 | D.非充分非必要条件 |
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解题方法
9 . 在棱长为2的正方体
中,P,E,F分别为棱
,
,BC的中点,O为侧面正方形
的中心,则下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
A.直线![]() | B.直线PF与平面POE所成角的正切值为![]() | C.三棱锥![]() ![]() | D.三棱锥![]() ![]() |
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10 . 明朝科学家徐光启在《农政全书》中用图画描绘了筒车的工作原理(如图).假定在水流量稳定的情况下,筒车上的每一个盛水筒都做逆时针匀速圆周运动,筒车转轮的中心O到水面的距离h为1.5m,筒车的半径r为2.5m,筒转动的角速度
为
,如图所示,盛水桶M(视为质点)的初始位置
距水面的距离为3m,则3s后盛水桶M到水面的距离近似为( )(
,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ea20ecbd481884949b6378230040c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a929d0d84e3654f03694adc8d1a326e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a7ff6bb8000946da9599d7d903ac9a.png)
A.4.5m | B.4.0m | C.3.5m | D.3.0m |
您最近一年使用:0次
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2卷引用:重庆市沙坪坝区部分学校2023-2024学年高一下学期4月阶段检测数学试题