2024高三下·全国·专题练习
解题方法
1 . 已知角
,
的顶点均为坐标原点,始边均与x轴的非负半轴重合,终边分别过点
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a09db9030f664ae36fd9035b94d9a1.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f89b18f69812fb34fd1290e2f1b36aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a09db9030f664ae36fd9035b94d9a1.png)
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2 . 故宫博物院收藏着一幅《梧桐双兔图》.该绢本设色画纵约
,横约
,挂在墙上最低点
离地面
,小兰身高
(头顶距眼睛的距离为
.为使观测视角
最大,小兰离墙距离
应为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75d1efd3f5072a22818c547b72f2da93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8944d00d70fc105c0ae6c93001b6a25b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65df60cd1990cab788f9e3263530a318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb1666ea606f0fd4f2dfcf0bcbf7c90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32cea07f4f0e0e525f922675a26ed43e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 如图所示,在梯形
中,
,
,点
是
上一点,
,
的面积为
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c4340dcffb0783d118a587e5352a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b873dd4b75260d9ff735e772e29d06bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6093eebca8f3ff82ce9298feb197e955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
A.![]() | B.![]() | C.8 | D.![]() |
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2024-05-04更新
|
272次组卷
|
3卷引用:第17题 解三角形中的求角问题(压轴小题)
(已下线)第17题 解三角形中的求角问题(压轴小题)江苏省宿迁市泗阳县实验高级中学2023-2024学年高一下学期第二次调研测试(5月)数学试题浙江省宁波市镇海中学2023-2024学年高二下学期期中考试数学试卷
2024高三·全国·专题练习
解题方法
4 . 已知
,
.
(1)求
的值;
(2)若
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8296f23570cab1861d26aed93360a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f235d6fae415aa5d63a9541e1bd4ee6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d0e396bafa521596334b0176ffabe35.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b9082ee8dab6c1e4e325c9db6b9f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3836a3e2e5a7fe466c89ca47e66bfbd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
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2024高三·全国·专题练习
解题方法
5 . 已知
的内角A,B,C所对的边分别为a,b,c,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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2024高三·全国·专题练习
6 . 在
中,内角A,B,C对应的三边分别为a,b,c,且
.
(1)若
,
,求
的面积;
(2)若点D在线段CB上,
于点E,且
,当
最大时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab30ebcc181d35763900e73ec1783ba.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ef6f920cf01e61596caa2243af1619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若点D在线段CB上,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fbef4d8ce69016bc2e77783e617a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8698607a4ad7635bb22e99760314a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
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解题方法
7 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa21f3116751888561881e3f299079d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f01c217b97d30b2a56b8ea410f5a69f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024高三·全国·专题练习
解题方法
8 . 已知
为锐角,且
,
.求:
(1)
的值;
(2)
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474929dd8e89d9ce37448ae72b48d04f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9330f5a1902fe99fc5edd744fbe9146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d98ca14c3532f75d6f453f9ac060603a.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c1f914da4657eca7865982b130b299.png)
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解题方法
9 . 如图,正方形
的边长为
分别为边
上的点,则以下错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850a0ec73c3fba08a6764a7bc2209c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/630754333e7043c573d0ecdb64cf1246.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若点![]() ![]() ![]() ![]() |
D.![]() ![]() |
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2024·全国·模拟预测
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解题方法
10 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a2d7321763c0e9cc62df0d814317601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa3d3ca8ae9c034b384ba8267808553.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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