1 . 公元前6世纪,古希腊的毕达哥拉斯学派通过研究正五边形和正十边形的作图,发现了黄金分割值约为0.618,这一数值也可以表示为
,若
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0089448fbee35d69098d1cb97f056413.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8210744a62fc4cbe44921712064557e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49eb6bedcfb4324c4e7116f56b7f060f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0089448fbee35d69098d1cb97f056413.png)
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2 . 已知
,则
的值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4690a46dce144f1a1fe565e14df009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a39ee003ce154b19561409afdddb7c.png)
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3 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6cbc3df98c88ed0eedbda322d430a3a.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/762e6da21c8abcc3da2b876ddf238137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6cbc3df98c88ed0eedbda322d430a3a.png)
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4 .
的内角
,
,
的对边分别为
,
,
.已知
,
,
,则
的面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2021-12-11更新
|
455次组卷
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4卷引用:内蒙古赤峰市红山区2021-2022学年高三上学期11月联考理科数学试题
5 . 在
中,角的对边分别为
,
,
,若
,且
,
,
为等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c59beadd1aae5c5ae24ef7bc007e02.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1d16fab86ad6d0295ccd05226950d4.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c59beadd1aae5c5ae24ef7bc007e02.png)
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6 . 已知
为坐标原点,点
,
,
,
,则以下三个结论:①
是等腰三角形;②
;③
,其中正确结论的序号有___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7381d816d9c3b0bc744a35d947b190f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdef41a4957ea2e6d0d84b3f81ced7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de3e75608ecab51b0baa4f7eb3595f12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89eb252b8ebe87ef71642dbf9ab3442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0aefd5fa3280d7f7dc7ba064b31a818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c59a05ca807d18c3d9965c37bb28d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b772f90c01239300092485f630644b42.png)
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7 . 在
中,角A,B,C的对边分别为a,b,c,若
,
,
,则
的面积是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1466856bf2570685d3629c1f813748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fa79a550591eb9e1bd07bced3a08fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2021-11-22更新
|
502次组卷
|
10卷引用:内蒙古赤峰市2021届高三模拟考试数学(文)试题
内蒙古赤峰市2021届高三模拟考试数学(文)试题(已下线)【新东方】高中数学20210527-014【2021】【高二下】江西省南昌市湾里一中等六校2020-2021学年高一下学期期末联考数学试题上海市格致中学2021-2022学年高二上学期期中数学试题北京市丰台区2016-2017级高一下学期期中考试数学试题2019年甘肃省临夏市临夏中学高三上学期第一次摸底考试数学(文)试题宁夏吴忠中学2021-2022学年高二下学期期中考试数学(理)试题河北省武强中学2021-2022学年高一下学期期中数学试题福建省福州鼓山中学2021-2022学年高一下学期期末考试数学试题新疆维吾尔自治区昌吉回族自治州呼图壁县第一中学2023-2024学年高二上学期期初模块测试数学试题
8 . 如图是改革开放四十周年大型展览的展馆——国家博物馆.现欲测量博物馆正门柱楼顶部一点
离地面的高度
(点
在柱楼底部).在地面上的
两点测得点
的仰角分别为
,且
米,则
为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce066003c0a1f0879cbca2f32802e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce066003c0a1f0879cbca2f32802e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6808e158830a26a26cb8188a499b5a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11aaf622ea39b30aca884893561efe36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/3601691f-f869-45e6-874a-dd6f72443696.png?resizew=214)
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9 . 已知
的周长为
,且
,则边
的长为_____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f190b17530d81d927c358ac84757a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636f90ac5777eb1673cd51e3baedfe73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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10 . 在
中,
为边
上一点,
,
,
,若
的面积为
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
___________ .
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2544d2219b85e4f5fa78ff110a7a1e30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0188b06b514e41f298449ede057e2062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
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