1 . 如图,
是圆
的直径,弦
交
于
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/3a21a435-1123-40ab-ab1d-3eed86477879.png?resizew=164)
(1)求圆
的半径
;
(2)求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5713d1a64003579a8daec80c5a55b939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689b95a2eeb841dd3a0a3a6dfa3be8fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/3a21a435-1123-40ab-ab1d-3eed86477879.png?resizew=164)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
2 . 如图,在四边形
中,
.
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572582211321856/1572582217449472/STEM/4211efee86434159866285324a6ca6d6.png)
(1)求
边的长;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce73c53ddc28e511cc4aecf91075d421.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572582211321856/1572582217449472/STEM/4211efee86434159866285324a6ca6d6.png)
(1)求
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572582211321856/1572582217449472/STEM/878e7d84f77e4967b2f154d49bf373f8.png)
(2)求
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572582211321856/1572582217449472/STEM/b9fc02b602b241c2aba63b87eb841b53.png)
您最近一年使用:0次
2016-12-04更新
|
815次组卷
|
2卷引用:2016届四川省双流中学高三12月月考文科数学试卷
3 . 如图,为了测量
两点间的距离,选取同一平面上
两点,测出四边形
各边的长度(单位:
):
,且
与
互补,则
的长为
.
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572564572160000/1572564577632256/STEM/21ba78918b2645f984a63e8e580a4fbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6767ec8f6dd2ad3e23239b55d25f35f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b841cdd5fef12de7867028b8a42eab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce89b633e5d6bcf9406e3f9208fe06d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1512afbb3317d9f40c1a2071b466f996.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19798b6271b2713fbdb1ba959a5ddd82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001fb1746a5c0d71c5d645e024fa8b3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce89b633e5d6bcf9406e3f9208fe06d.png)
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572564572160000/1572564577632256/STEM/21ba78918b2645f984a63e8e580a4fbc.png)
A.7 | B.8 | C.9 | D.6 |
您最近一年使用:0次
2016-12-04更新
|
910次组卷
|
7卷引用:2016届重庆一中高三下学期3月月考文科数学试卷
2016届重庆一中高三下学期3月月考文科数学试卷(已下线)专题4.6 解三角形应用举例-2021年高考数学(文)一轮复习-题型全归纳与高效训练突破(已下线)专题4.7 正弦定理和余弦定理及其应用(精练)-2021年高考数学(文)一轮复习学与练(已下线)第21讲 解三角形应用举例(练) - 2022年高考数学一轮复习讲练测(课标全国版)2015-2016学年广东省佛山一中高一下期中数学试卷吉林省梅河口市第五中学2019-2020学年高一4月月考数学试题吉林省通化市梅河口五中2019-2020学年高一(4月份)第一次月考数学试题
解题方法
4 . 在
中,
,
是边
上一点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac70ca9869d93587d9c13dad6bf487c.png)
(1)求
的值;
(2)求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e2eb084fc85f63c963fd0f596f2394b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac70ca9869d93587d9c13dad6bf487c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71f67ce94d71bc7c8dcc33b9ec37611.png)
您最近一年使用:0次
名校
解题方法
5 . 如图,现有一个以
为圆心角、湖岸
与
为半径的扇形湖面
.现欲在弧
上取不同于
的点
,用渔网沿着弧
(弧
在扇形
的弧
上)、半径
和线段
(其中
∥
),在该扇形湖面内隔出两个养殖区域—养殖区域I和养殖区域II.若
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/17c1a9d3-44e8-48ea-ba81-454e4c49b3d1.png?resizew=407)
(1)用
表示
的长度;
(2)求所需渔网长度(即图中弧
、半径
和线段
长度之和)的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52705567101a48893de582656ef41527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d162c29b1e484cfc87350dd68f00b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f7983aade7a7c61f065c5bd3569fbd2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/17c1a9d3-44e8-48ea-ba81-454e4c49b3d1.png?resizew=407)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)求所需渔网长度(即图中弧
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
2016-12-03更新
|
1009次组卷
|
2卷引用:2016届江苏省清江中学高三周练数学试卷
6 . 在梯形
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1017556d56a52591b3606a77311606f4.png)
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572239377891328/1572239383912448/STEM/34081ba97f7649d7aafed40cc345562b.png)
(Ⅰ)求
的长;
(Ⅱ)若
,求梯形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1017556d56a52591b3606a77311606f4.png)
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572239377891328/1572239383912448/STEM/34081ba97f7649d7aafed40cc345562b.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
14-15高三上·河北石家庄·阶段练习
名校
解题方法
7 . 在下列给出的命题中,所有正确命题的序号为____________ .
①函数
的图象关于点
成中心对称;
②对
,若
,则
或
;
③若实数
满足
,则
的最大值为
;
④若
为钝角三角形,则
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb18deb9367e12d39dcd54b310b63e58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
②对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70e0db0174a2c05b28fb6d0c2508778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a618d08d71463522c37df3378d358850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f078bd034d679faeb1a01530af32783c.png)
③若实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17b0033ec26789418ffe13fa677e0f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57067c1145bbe8c6cc231d7e74727032.png)
您最近一年使用:0次
8 . 在
中,
,点
在边
上,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab15f71acf24a48b4ea4efac5f09b718.png)
___________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b6bef27de230acad352f25e954f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdba5e7de662f6a691f0d6fb57f9ffdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d6b7bff8b3015c1ff5102c251892723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab15f71acf24a48b4ea4efac5f09b718.png)
![](https://img.xkw.com/dksih/QBM/2014/9/17/1571856578494464/1571856584015872/STEM/d55a51558c4c4f1480d72994b343471e.png?resizew=144)
您最近一年使用:0次
2016-12-03更新
|
907次组卷
|
5卷引用:2015届河北省唐山市高三年级摸底考试文科数学试卷
(已下线)2015届河北省唐山市高三年级摸底考试文科数学试卷(已下线)2015届黑龙江省哈尔滨市六中高三上学期期中考试理科数学试卷2015届河北省冀州中学高三12月调研考试理科数学试卷四川省三台中学2016-2017学年高一下学期第三次月考(6月)数学试题江西省赣州市南康中学2017-2018学年高一下学期第三次月考数学(理)试题
9 . 如图,在
中,
是边
的中点,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/9/637ec8a5-2cd2-4014-b181-5ee835e9576d.png?resizew=220)
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccf1455904a482b66b5bf83000a1b077.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/9/637ec8a5-2cd2-4014-b181-5ee835e9576d.png?resizew=220)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
您最近一年使用:0次
2016-12-02更新
|
1492次组卷
|
4卷引用:2014届广东省广州市普通高中毕业班综合测试二理科数学试卷
(已下线)2014届广东省广州市普通高中毕业班综合测试二理科数学试卷2014-2015学年河北省唐山市开滦二中高一下学期期中考试数学试卷12014-2015学年河北省唐山市开滦二中高一下学期期中考试数学试卷2(已下线)【全国百强校】广东省深圳市深圳中学2018-2019高二第二学期第一次月考试理科数学试题
2014高三·全国·专题练习
名校
解题方法
10 . 如图,两个工厂A、B相距2km,点O为AB的中点,要在以O为圆心,2km为半径的圆弧MN上的某一点P处建一幢办公楼,其中MA⊥AB,NB⊥AB.据测算此办公楼受工厂A的“噪音影响度”与距离AP的平方成反比,比例系数为1;办公楼受工厂B的“噪音影响度”与距离BP的平方也成反比,比例系数为4,办公楼与A、B两厂的“总噪音影响度”y是A、B两厂“噪音影响度”的和,设AP为xkm.
![](https://img.xkw.com/dksih/QBM/2014/4/8/1571604833107968/1571604838531072/STEM/d945426e1f7940c4970cae9bc0767b2d.png)
(1)求“总噪音影响度”y关于x的函数关系式,并求出该函数的定义域;
(2)当AP为多少时,“总噪音影响度”最小?
![](https://img.xkw.com/dksih/QBM/2014/4/8/1571604833107968/1571604838531072/STEM/d945426e1f7940c4970cae9bc0767b2d.png)
(1)求“总噪音影响度”y关于x的函数关系式,并求出该函数的定义域;
(2)当AP为多少时,“总噪音影响度”最小?
您最近一年使用:0次