名校
1 . 在
中,已知
,
,若
分别是
的三等分点,其中
靠近点
,记
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8520a21b909d04f763d0f61dd74bc158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86c589939053ce21ce0a67cf40054a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad3066aadbe41d8fb72bceed2e9d297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f24ef72400d1eba4842046b6ba246b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4cb2e90e56e2563a28cb109261062f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 若函数
存在最小值,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cecab0f23c5ee439360b1225997cc11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e46d0336ea9893b942b928a9ee57a1c.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b90cb3ca8d27ff46a98e32867e8c86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e46d0336ea9893b942b928a9ee57a1c.png)
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4 . 如图,在扇形OPQ中,半径
,圆心角
,C是扇形弧PQ上的动点,矩形ABCD内接于扇形,记
.则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/9/b627dcb5-7e3f-4409-9a6f-9b918ef91af9.png?resizew=156)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9934cf2feb65b00392ba39d8242e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3adeb57920405a9f1341fb6a21868c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f891d3293f4d016dc384b5ff6ebcb87.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/9/b627dcb5-7e3f-4409-9a6f-9b918ef91af9.png?resizew=156)
A.弧PQ的长为![]() |
B.扇形OPQ的面积为![]() |
C.当![]() ![]() |
D.矩形ABCD的面积的最大值为![]() |
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5 . 已知
,
,
,那么M,N,P之间的大小顺序为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd52064c013cac1ad1fbd73b225872e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bc6892b49454d8a06167c67a77196fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9473ae5c4d2e1ac2bb40811801884972.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 十字测天仪广泛应用于欧洲中世纪晚期的航海领域,主要用于测量太阳等星体的方位,便于船员确定位置,如图1所示,十字测天仪由杆AB和横档CD构成,并且E是CD的中点,横档与杆垂直并且可在杆上滑动,十字测天仪的使用方法如下:如图2,手持十字测天仪,使得眼睛可以从A点观察,滑动横档CD使得A,C在同一水平面上,并且眼睛恰好能观察到太阳,此时视线恰好经过点D,DE的影子恰好是AE.然后,通过测量AE的长度,可计算出视线和水平面的夹角
(称为太阳高度角),最后通过查阅地图来确定船员所在的位置.
,横档CD的长度为40,则太阳高度角的正弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd8e80329f167f91b9668e5bf13a9cb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 已知在
中,点
在线段
上,且
,延长
到
使
.设
,
.
、
表示向量
、
;
(2)若向量
,
,
、
夹角为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c3b902ae24074cd49ffe4c6f5590c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e68c1d3694923f6043834f436049edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8eb792421232db18dc02415163ffe30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420ad6159fc091d6a5ffddf0676d2662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c2e7e9fd8519fd1c293cc577408263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8337706c550bc095d7a2bd872221a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c085dbb9d78aef7d81c3f4d6855f067b.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/994f5f1b332ac502f8da36d0a2edb83c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c7d3b256fec1c30b6dd2a7b8e202f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab08e7f6ab75a28125b96cdb45fea4e.png)
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8 . 已知
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c8e6f7d2099684b9e4da51907e424f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0649cea013b7b3d79a2fd934928e2e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85527d190d4e1d6bac4145d1c716e65e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知
是平面内的一个基底,则下列也是平面内一个基底的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a341ba62373f3286b0a3425cbc3f79.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-05-04更新
|
150次组卷
|
2卷引用:江苏省无锡市辅仁高级中学2023-2024学年高二下学期期中考试数学试题
名校
解题方法
10 . 已知平面向量
,
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdd403eaea679c66e0f01095177d2fad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159cb6971f298f8b53afb579b35bfba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
A.![]() | B.![]() | C.![]() | D.8 |
您最近一年使用:0次
2024-05-04更新
|
245次组卷
|
2卷引用:江苏省无锡市辅仁高级中学2023-2024学年高二下学期期中考试数学试题