名校
1 . 已知
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573e1c0d7cedbd7581b8401d64fdba44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f7ebb63755a8f537985ebbee756016b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b1029ae8e4120c872408387aea94a3.png)
A.![]() | B.![]() | C.![]() | D.3 |
您最近一年使用:0次
2019-12-10更新
|
1202次组卷
|
2卷引用:云南省昭通市水富市云天化中学2019-2020学年高二上学期期末数学(理)试题
名校
2 . 我国古代数学家赵爽的弦图是由四个全等的直角三角形与-一个小正方形拼成的一个大正方形(如图).如果小正方形的边长为
,大正方形的边长为
,直角三角形中较小的锐角为
,则
( )
![](https://img.xkw.com/dksih/QBM/2019/12/26/2363478040567808/2364142581825536/STEM/8e71705d-305e-4920-8678-1f53cb8e5d8d.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c53a96f034a5855bf8506abce00adeca.png)
![](https://img.xkw.com/dksih/QBM/2019/12/26/2363478040567808/2364142581825536/STEM/8e71705d-305e-4920-8678-1f53cb8e5d8d.png?resizew=161)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2019-12-27更新
|
896次组卷
|
6卷引用:云南省曲靖市第二中学2022-2023学年高二上学期期末考试数学试题
名校
3 . 已知
,且
.
(Ⅰ)求
的值;
(Ⅱ)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f201f6e84279e80b85f394f4d930ed41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bc052a11cf1a01445992672dde2836.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511366b3d52171408900f2f77bfeb372.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/178b4f63241eb6c57c749e573e817939.png)
您最近一年使用:0次
2019-01-19更新
|
873次组卷
|
5卷引用:【全国百强校】云南省云天化中学2018-2019学年高一上学期期末考试数学试题
4 . 已知在
中,
.
(1)求
,
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66b31f1f9a2328525da2681619efb79.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1311f32edf13f8caee5edb03f24a7ba.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c346d455a581456659f91fd237ca9146.png)
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13-14高三上·江苏淮安·阶段练习
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5 . 在
中,
分别是角
的对边,且
,
.
(1)求角
的值;
(2)若
求
的面积.
![](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/a4e1cc6b334edcd3aad471721f9b4d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9c67e2727f18443b5cf81ccca24892.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b5c164f58a436b75026c228fea64e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次