如图,在四边形ABCD中,△BCD是等腰直角三角形,∠BCD=90°,∠ADB=90°,
,BD=2,AC与BD交于点E.
![](https://img.xkw.com/dksih/QBM/2021/11/8/2846794585595904/2850905959735296/STEM/2a6a775070df4974b807e047b2253726.png?resizew=101)
(1)求sin∠ACD;
(2)求△ABE的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8cc377ac333f70403bdc8fe84098f55.png)
![](https://img.xkw.com/dksih/QBM/2021/11/8/2846794585595904/2850905959735296/STEM/2a6a775070df4974b807e047b2253726.png?resizew=101)
(1)求sin∠ACD;
(2)求△ABE的面积.
21-22高三上·宁夏吴忠·阶段练习 查看更多[5]
宁夏吴忠中学2022届高三上学期线上教学测试数学(理)试题甘肃省张掖市第二中学2021-2022学年高二上学期11月月考数学(理)试题甘肃省张掖市第二中学2021-2022学年高二上学期11月月考数学(文)试题(已下线)期中考测试(提升)-2021-2022学年高一数学一隅三反系列(人教A版2019必修第二册)广东省肇庆市第一中学2023-2024学年高二上学期开学考试数学试题
更新时间:2021-11-14 07:25:56
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【推荐1】如图,在
中,点
在
边上,
,
.
![](https://img.xkw.com/dksih/QBM/2018/3/28/1912144093421568/1915413238112256/STEM/a538dbfa693047ec86ef24b45fa23961.png?resizew=183)
(
)若
,求
的面积.
(
)若
,
,求
的长.
![](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/2a58a622e2b1a239f2f96aa1501e9799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://img.xkw.com/dksih/QBM/2018/3/28/1912144093421568/1915413238112256/STEM/a538dbfa693047ec86ef24b45fa23961.png?resizew=183)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e19b77c15bdff64b03a92cac5e7598eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb4b13ef03a5091392a93fa1219f3bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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【推荐2】
的内角
的对边分别为
,已知
是
边上一点,
.
(1)求
;
(2)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4589816e5adcdb61b9ed8a49a96ef9dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb2fbce9e2469c1932a1cefc58e2926e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e563e032dfdef69b0f357060c27bd4.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d4cbfc00ff1b4016bc51b6704f6c42.png)
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【推荐1】
的内角
所对的边分别为
,已知
.
(1)求
的大小;
(2)若
,
,求
和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ea2750b73c7b5410aa75d189585eef.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b21f51a8fe0d9f826aa1a5d0017b908.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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【推荐2】如图,已知平面四边形ABCD中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/4467ca90-009f-426d-bf2b-13e9a5329523.png?resizew=150)
(1)求
的值;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc223bc59d4c5b1c99f811e4bded9783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64476ffee8fd79c8ff6682dc504ce0a2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/4467ca90-009f-426d-bf2b-13e9a5329523.png?resizew=150)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0631374bf6479204a48d384b30bab46a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd6c45556e76af03be8b521396bed6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
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【推荐2】为了丰富同学们的课外实践活动,石室中学拟对生物实践基地(区域)进行分区改造.
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(2)学生自主栽培区
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
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