名校
解题方法
1 . (1)已知
,
,求
的值;
(2)求值:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139f30b94794ae55d7be5eca65344b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012b394238ad2341ea47d0d4a129a35a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4c306bace220315233a37c78260014.png)
(2)求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577f9eab7e34ac933e378f05c9dda5a5.png)
您最近一年使用:0次
2 . 在
中,角
,
,
的对边分别为
,
,
,且满足_____.
(从以下两个条件中任选一个补充在上面横线上作为已知,将其序号写在答题卡的横线上并作答.)
条件①:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d22b31bda922ba80b3d55afc0c9bea.png)
条件②:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f301949e79f697a216b84fbc679137.png)
(1)求角
;
(2)若
为锐角三角形,
,求
面积的取值范围.
![](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)
(从以下两个条件中任选一个补充在上面横线上作为已知,将其序号写在答题卡的横线上并作答.)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d22b31bda922ba80b3d55afc0c9bea.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f301949e79f697a216b84fbc679137.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-11-29更新
|
301次组卷
|
2卷引用:河南省南阳市2023-2024学年高三上学期期中数学试题
解题方法
3 . 在锐角
中,内角
,
,
的对边分别为
,
,
,已知
.
(1)证明:
.
(2)若
,证明:
.
![](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/1c8e5ce6c55a720a332a08c07f1a89a1.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b946d47b25c23a2fb1f8667d7516a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527198678994e900291fc1223c823b62.png)
您最近一年使用:0次
解题方法
4 . 在
中,D为边AC上一点,
,
.
(1)若
,求
的面积;
(2)若
,
,
,求AD的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af633abfe3cb03f1836db6c570a5bcc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d35d8d8bb0dc17f2f86fe5b230a2b8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/251023095e4ed1b906ce1ea86ac14c77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133760237c0ccf2d6a83786925b6d23c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be9424314de58ae590641aa36c32336e.png)
您最近一年使用:0次
2023-11-15更新
|
176次组卷
|
2卷引用:河南省南阳地区2023-2024学年高三上学期期中热身模拟大联考数学试题
解题方法
5 . 在
中,已知
.
(1)求
;
(2)若
的面积为
,
,求AB的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca360f427f9332158fe3245c148e4d1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad4fd4871453331ca8f15aa0efc5a93d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8dc761b1dae978e6648cbe4959abbd.png)
您最近一年使用:0次
2023-11-09更新
|
292次组卷
|
2卷引用:河南省周口市项城市2023-2024学年高三上学期期中数学试题
解题方法
6 . (1)已知锐角
的终边上一点
的坐标为
,求
;
(2)若
且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceff0e7d103475c3ba9a2712f373185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33b1b22a659d5dd80b05eb1dfdff9afe.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/612fd36aeb83099c4644c076db691612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d207f1d1856c3d384c9b3b498d0ce6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
您最近一年使用:0次
名校
解题方法
7 . 在
中,内角
,
,
的对边分别为
,
,
,已知
是
和
的等比中项.
(1)证明:
.
(2)求
的取值范围.
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ad55f7f3af6a39ff22b8e5f0ee5291.png)
您最近一年使用:0次
2023-11-01更新
|
492次组卷
|
2卷引用:河南省周口市项城市第一高级中学2023-2024学年高三上学期第四次段考数学试题
8 .
分别为
内角
的对边,已知
.
(1)求
;
(2)若
在线段
上,
,且
的面积
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](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/275b6cbf5b67cd1008d7c207269db71b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](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/cad7dd1e84406db576f06859955cfe8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1c561f7eaa436b21b39c67ade61f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-10-19更新
|
616次组卷
|
3卷引用:河南省焦作市博爱县第一中学2023-2024学年高二上学期期中数学试题
解题方法
9 . 在
中,角
的对边分别为
,已知
.
(1)求角
的大小.
(2)若
,求
及
的面积.
![](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/1d3f9773869aeed338d5cf8afa4e4639.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2aeeb2c0b0548aa937412fed564db0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
10 . 在①
;②
;③
.三个条件中选一个,补充在下面的横线处,并解答问题.在
中,角
的对边分别为
,
的面积为
,且满足______.
(1)求
的大小;
(2)设
,点
为边
的中点,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3df8799b0b93f98c0bda782326910a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab64c1e55be4d9d3499ad5a6aca74448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f3e706c79adf6baa90d7e5317ff4d40.png)
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/123fca93e5345c750d53780d39b4e6dd.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/a50a1fc2c1f0ae70d58d7a7880e8cb23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次