名校
解题方法
1 . 在定圆上随机取三点A、B、C,则
是锐角三角形的概率等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2023-01-04更新
|
228次组卷
|
3卷引用:四川省成都市树德中学2022-2023学年高二上学期期末检测数学(理)试题
解题方法
2 . 如图,在边长为6的正方形
内有一个锐角
,
分别为角
的对边,
,且
,则往正方形
内投一粒豆子,豆子落在锐角
内的概率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451e9abe59afb51fa0b0b762952f11e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a633d13333ace3ba3da78a1063f1dd59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2023/1/6/3147167064596480/3148213797429248/STEM/2ddccdef97e94ef3bb65d624caa0b77e.png?resizew=154)
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名校
解题方法
3 . 已知圆的半径为2,在圆
内随机取一点 M,则过点 M 的所有弦的长度都大于
的概率为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
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2022-02-22更新
|
412次组卷
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2卷引用:黑龙江省哈尔滨师范大学附属中学2021-2022学年高三上学期期末考试数学(文)试题
名校
解题方法
4 . 已知
,若a,b都是从区间
中任取的一个数,则满足
的概率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f28ad2b2a604ad0831c8375115fbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5432187d1c042787433b7633292d00fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f87be3abf925eb1b65473d7bcc54b96.png)
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2022-02-04更新
|
302次组卷
|
2卷引用:安徽省部分学校2021-2022学年高三上学期期末联考文科数学试题
5 . 明朝著名易学家来知德以其太极图解释一年、一日之象的图式,一年气象图将二十四节气配以太极图,说明一年之气象,来氏认为“万古之人事,一年之气象也,春作夏长秋收冬藏,一年不过如此”,下图是来氏太极图,其大圆半径为5,大圆内部的同心小圆半径为2,两圆之间的图案是对称的,若在大圆内随机取一点,则该点落在黑色区域的概率为________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/9e989ddd-d124-4f47-84fc-9ed40b3b33bf.png?resizew=137)
您最近一年使用:0次
解题方法
6 . 在矩形
中,已知
,
,从该矩形内随机选取一点
,若
到四个顶点的距离都大于1的概率为
,则圆周率![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f81fae9a834ec0741fea0ceaf5e42f.png)
___________ .(用
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3606c4a853a6a34cb7f33bea81b15a1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f81fae9a834ec0741fea0ceaf5e42f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3606c4a853a6a34cb7f33bea81b15a1f.png)
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解题方法
7 . 若实数
,
,则函数
在区间
单调递增的概率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d9b1cca22323ced9b4ff504244cf32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d923ffed8ce12675950070dacecca19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041e276803f987043522c1a3b79cf5b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a7a4a037a4dfe973f1eb683d93d799.png)
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解题方法
8 . 如图,某同学在
(角
等于
)内用尺规作图,
为线段
上一点,以点
为圆心、
为半径画圆,以
为圆心,
为半径再所画的圆刚好经过点
,在
内任取一点,则该点取自扇形
内的概率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://img.xkw.com/dksih/QBM/2021/7/21/2768804594941952/2774874958397440/STEM/f7ecba32f3ac4c299f9d1d017eff54df.png?resizew=166)
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名校
解题方法
9 . 已知
,若向区域
内随机投1个点
,则点
落入区域
的概率为__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95b027fef1a3c0d1a58de7f0b7aad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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解题方法
10 . 设不等式组
表示的平面区域为
,若从圆
:
的内部随机选取一点
,则
取自
的概率为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b48e889edf844aa46db845f781b09d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
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2021-09-04更新
|
256次组卷
|
2卷引用:云南省曲靖市罗平县第二中学2019-2020学年高二下学期期末考试数学(理)试题