解题方法
1 . 如果![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75cb7615ca33b128496114742a1f2dd.png)
(1)求证:
;
(2)若
为三角形的三个内角,判断
与
的大小关系,并予以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75cb7615ca33b128496114742a1f2dd.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e10e76a8cf6e3eb92e57ee971a218a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e263f0291e3df8b6fb866abaf3f4576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbeb449ec91ac7e5798e3b347fd0d107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a25e473dce119ddd92f32fef1dc576.png)
您最近一年使用:0次
名校
解题方法
2 . 已知
的内角A,B,C的对边分别为a,b,c,且
.
(1)求a的值:
(2)求证:
;
(3)
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc8458f250f3b26d6bcd778b4e5abb5.png)
(1)求a的值:
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a39678c84e2d5ae1f14dacdbe728a3.png)
您最近一年使用:0次
2024-03-25更新
|
1246次组卷
|
3卷引用:天津市南开区2024届高三下学期质量监测(一)数学试卷
3 . 摩天轮是一种大型转轮状的机械建筑设施,游客坐在摩天轮的座舱里慢慢地往上转,可以从高处俯瞰四周景色.如图,某摩天轮最高点距离地面高度为
,转盘直径为
,设置有
个座舱,开启后按逆时针方向匀速旋转,游客在座舱转到距离地面最近的位置进舱,转一周大约需要
.
后距离地面的高度为
,求在转动一周的过程中,
关于
的函数解析式;
(2)证明:
;
(3)若甲、乙两人分别坐在两个相邻的座舱里,在运行一周的过程中,求两人距离地面的高度差
(单位:
)关于
的函数解析式,并求高度差的最大值(精确到
).
(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b339f047c40d01b62ddad00a0c19cd25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba52ced0811df98fedb575535b24257b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb69696a695cdb5e352d5dbbb7182b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffec8485ffd139b3a8af52c4b6760df5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5481d5a5e5f293cb87ce8d5be068097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d847196d7a43900fb1ea0d95cd6fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa741bf4347e9b8a43ad8e7f5c5581a0.png)
(3)若甲、乙两人分别坐在两个相邻的座舱里,在运行一周的过程中,求两人距离地面的高度差
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87796ee30e6c5d5e6b6285b32abe10c.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339965424e648c126447d022a8303708.png)
您最近一年使用:0次
解题方法
4 . 在
中,角A,B,C所对的边分别为a,b,c.已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2e34a4adaf87ba52790f88a211a6cd.png)
.
(1)证明:
;
(2)求a;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2e34a4adaf87ba52790f88a211a6cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2c90d58215831b341f7fb68545a5e0.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
(2)求a;
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b919f0869717376807ca5481f17412.png)
您最近一年使用:0次
解题方法
5 . 在斜三角形
中,内角
所对的边分别为
,已知
.
(1)证明:
;
(2)若
的面积
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/7a60cbe43441afaac1f6e822020779e9.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3f90f37a69d673d5654acf3e7e3630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f98656da793a0d6d3346074d7b5281c.png)
您最近一年使用:0次
解题方法
6 . (1)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/ef582149603970540b13e6a6e5d58435.png)
(ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fca31088ca7d4606d8e1954d71185da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023-08-02更新
|
259次组卷
|
2卷引用:山东省威海市2022-2023学年高一下学期期末数学试题
7 . 已知对任意正整数n,都存在n次多项式函数
,使得
对一切
恒成立.例如“
,
”
(1)求
;
(2)求证:当n为偶数时,不存在函数
使得
对一切
恒成立;
(3)求证:当n为奇数时,存在多项式函数
使得
对一切
恒成立,并求其最高次项系数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2425552313d50a253bfb3cb4e9974ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7357edad3861daeb9328b2a8c1fd547a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a053a389d6b77ca56c114336783799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68babd0b5e06e74642d647a9b3c5e5e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2683001d33c4b5bee8330e605cea939.png)
(2)求证:当n为偶数时,不存在函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6f0a55fa53bf5f8e6654897975bcf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43cecaa5d4347185bb50ebb36750736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
(3)求证:当n为奇数时,存在多项式函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c5952c5b7806d45db61d1abf572d9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07694fbfb14f7a61d2cd1bc86a1f9eef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
您最近一年使用:0次
8 . 在
中,内角A,B,C所对的边分别为a,b,c,已知
.
(1)求角C的大小;
(2)若
,P为
内一点,
,
,则从下面①②③中选取两个作为条件,证明另外一个成立:①
;②
;③
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e1dcf28ab3fb22a4aecd0d5d6b5f9e.png)
(1)求角C的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eea78bf026d76f1cb9cc3dc9349a193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b88e9a4616bf02cc44fefd7eaf1e4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b58bbc02479917ad761a24eaae0dbfd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56bb7fcd7623bc7d2b8d33be10193159.png)
您最近一年使用:0次
2022-05-15更新
|
226次组卷
|
2卷引用:甘肃省酒泉市2022届高考5月联考数学(理科)试题
解题方法
9 . 已知
中,角A,B,C所对的边分别为a,b,c,且
,
,
.
(1)求证:
是等腰直角三角形;
(2)已知点P在
的内部,且
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80a04e5d236a2d16a5741d22008def0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cb21ae875f36d52d0b6f82b0201d0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)已知点P在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c383691e8d740830a865b12d66f7633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587df01a98f499a9f361aafd8c3dac39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c45085c7cb291380fd6611390e4bf28.png)
您最近一年使用:0次
2022-03-25更新
|
752次组卷
|
3卷引用:华大新高考联盟2022届高三3月教学质量测评(新高考卷)数学试题
10 . 已知
为锐角三角形,且
.
(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/d2ddce89498b5d0f74d11fbcae2563eb.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09eebab59213386449a726b75065bf76.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17145b1c12c95ae02e401a8db98c6f51.png)
您最近一年使用:0次
2022-09-14更新
|
949次组卷
|
3卷引用:广东省潮阳实验、湛江一中、深圳实验三校2023届高三上学期9月联考数学试题