1 . (1)在
中,内角A,B,C的对边分别为a,b,c,R表示
的外接圆半径.
①如图,在以O圆心、半径为2的圆O中,
和
是圆O的弦,其中
,
,求弦
的长;
②在
中,若
是钝角,求证:
;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/b88cc3d0-c666-487e-9727-d5d16300cd3f.png?resizew=160)
(2)给定三个正实数a、b、R,其中
,问:a、b、R满足怎样的关系时,以a、b为边长,R为外接圆半径的
不存在、存在一个或存在两个(全等的三角形算作同一个)?在
存在的情况下,用a、b、R表示c.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
①如图,在以O圆心、半径为2的圆O中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83a71cff8e2ed9c2c93ed91a5d48671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e901c430af74f7bbce43364bd4f2e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
②在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e0c86fd15b7ef641e45e582dd4a58a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/b88cc3d0-c666-487e-9727-d5d16300cd3f.png?resizew=160)
(2)给定三个正实数a、b、R,其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c659396f6a0f72e213185b1ab2e198.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
2020-04-17更新
|
1647次组卷
|
15卷引用:上海市华师大二附中2015-2016学年高一下学期期中数学试题
(已下线)上海市华师大二附中2015-2016学年高一下学期期中数学试题江苏省南通中学2018-2019学年高一下学期期中数学试题湖南省怀化市第三中学2020-2021学年高一下学期期中数学试题(已下线)大题好拿分期中考前必做30题(压轴版)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)湖南省长沙市明德中学2021-2022学年高一下学期期中数学试题【全国百强校】福建省福州第三中学2017-2018学年高一下学期(实验班)期末考试数学试题上海市曹杨二中2018-2019学年高一下期末数学试题江苏省扬州中学2019-2020学年高一下学期6月月考数学试题(已下线)第6章三角(能力提升)-2020-2021学年高一数学下册单元测试定心卷(沪教版2020必修第二册)(已下线)第19讲压轴综合题(讲义)-【教育机构专用】2021年春季高一数学辅导讲义(沪教版2020必修第二册)(已下线)上海期末真题精选50题(大题压轴版)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)(已下线)第20讲 期末复习(练习)提升卷-【教育机构专用】2021年春季高一数学辅导讲义(沪教版2020必修第二册)(已下线)6.4平面向量的应用C卷上海市复旦大学附属中学2022-2023学年高二上学期开学考试数学试题(已下线)第六章 平面向量及其应用(基础、典型、易错、压轴)分类专项训练(3)
名校
2 . 在直角坐标平面
上的一列点
,简记为
.若由
构成的数列
满足
,其中
为方向与
轴正方向相同的单位向量,则称
为
点列.
(1)判断
,是否为
点列,并说明理由;
(2)若
为
点列,且点
在点
的右上方.任取其中连续三点
,判断
的形状(锐角三角形、直角三角形、钝角三角形),并予以证明;
(3)若
为
点列,正整数
,满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c13b920ec4a33103954c68daa7644ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621604766ddd141c86e37da5e71aef26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7836415e9b77334eee27c0d497ca5ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b7daef66f5d193befe316e6a9df2bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821a7c2e810ef18a2ee78f3722f03c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621604766ddd141c86e37da5e71aef26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b7813755384e0b6044fe296d7c6029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621604766ddd141c86e37da5e71aef26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a09e3d201f7699e8d480c768e34696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6edc135bb869e8e8dd68b711d147e368.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621604766ddd141c86e37da5e71aef26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e06dfbe171fd6d47d6b8ab101b62ac0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ada35c9021498f44a4c7cb9efd058bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e71cb7bfc09205b70196aeadad57439.png)
您最近一年使用:0次
2020-06-26更新
|
582次组卷
|
7卷引用:上海市复旦大学附属中学2016-2017学年高二上学期期中数学试题
名校
3 . 《数书九章》是中国南宋时期杰出数学家秦九韶的著作,其中在卷五“三斜求积”中提出了已知三角形三边
、
、
,求面积的公式,这与古希腊的海伦公式完全等价,其求法是“以小斜冥并大斜冥减中斜冥,余半之,自乘于上,以小斜冥乘大斜冥减上,余四约之,为实.一为从隅,开平方得积”若把以上这段文字写出公式,即若
,则
.
(1)已知
的三边
,
,
,且
,求证:
的面积
.
(2)若
,
,求
的面积
的最大值.
![](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/ce613eaa5df46a50174085ef5d1087fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1a9458e9239747d45f90e7aa6e7819.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/ce613eaa5df46a50174085ef5d1087fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1a9458e9239747d45f90e7aa6e7819.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5b763032c085a1e60822d8dc1b3605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1e5b7b1d5b077dabafae425a08d765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2019-11-06更新
|
346次组卷
|
3卷引用:河南省实验中学2019-2020学年高二上学期中数学(文)试题
名校
解题方法
4 . 某种型号汽车四个轮胎半径相同,均为
,同侧前后两轮胎之间的距离(指轮胎中心之间距离)
(假定四个轮胎中心构成一个矩形),当该型号汽车开上一段上坡路
(如图所示,其中
,
),且前轮
已在
段上时,后轮中心在
位置;若前轮中心到达
处时,后轮中心在
处(假定该汽车能顺利驶上该上坡路),设前轮中心在
和
处时与地面的接触点分别为
和
,且
,
;(其它因素忽略不计)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/1bcb7fca-1cb3-4e42-aab0-5aa93d42e356.png?resizew=329)
(1)如图所示,
和
的延长线交于点
,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e7f4d6badb183ac9cd31e77ef2b4dd.png)
;
(2)当
=
时,后轮中心从
处移动到
处实际移动了多少厘米?(精确到
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd680d922b6a7cccad8fbf84c4441d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2dc2abb1e1dc494b3719ba314e2a0bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597ce705d3a2fe04d29de9e81ec6250d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a0055328f2442b42040c3bcb0f847e.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f82e6414e130db9bbdee92326eee13a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26afb46c388cfef8e6ed0b66be802571.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/1bcb7fca-1cb3-4e42-aab0-5aa93d42e356.png?resizew=329)
(1)如图所示,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e7f4d6badb183ac9cd31e77ef2b4dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21870b0cdc028708ea96bb0628af71e1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f7a55368936281934788044d18ff0ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96a4fe52baabb3071d55134f157a6079.png)
您最近一年使用:0次
解题方法
5 . 在平面四边形
中,已知
,
,
.
(1)若
,
,
,求
的长;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/230f6a04c197e6036b8d3d7680b96ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5d383c419b53ea5159625f306760b9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27cde33974f1c49a3df4589c00974c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd244c4ca2ae50d2b87fb221a191fc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ee3eb2db791070d3e5269b8f3ba4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c905599045694c50d401bfc78c394f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bdd948550c8b796a4eee38b204f299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3039c774e00f6520449aa9d4b3c45464.png)
您最近一年使用:0次
2020-03-19更新
|
1854次组卷
|
4卷引用:海南省海南枫叶国际学校2019-2020学年高一下学期期中考试数学试题
海南省海南枫叶国际学校2019-2020学年高一下学期期中考试数学试题2020届天一大联考海南省高三年级第一次模拟考试数学试题【新教材精创】9.1.2余弦定理(第2课时)练习(1)(已下线)第8章 平面向量(章节压轴题解题思路分析)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)
名校
6 . 如图,
是平面四边形
的一条对角线,已知
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/f482ed50-9b3d-466e-b5be-9c9671bb8e13.png?resizew=185)
(1)求证:
为等腰直角三角形;
(2)若
,
,求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4355c3b7f9a75c91aae33d869f0350b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dcc535649e4f8c842a63d724bfd8cc9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/f482ed50-9b3d-466e-b5be-9c9671bb8e13.png?resizew=185)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb961bd7db3adb76af2d4cedb611bd7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2020-02-15更新
|
488次组卷
|
3卷引用:宁夏银川市第二中学2022-2023学年高一下学期期中考试数学试题
名校
7 . 如图,已知△
的内角
、
、
的对边分别为
、
、
,其中
,且
,延长线段
到点
,使得
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/e11c7f0c-57e4-4c53-84ed-7186352305cb.png?resizew=189)
(1)求证:
是直角;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/ad5e009486af263893ca8290be72f258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e762fe2dd40d314915682433b2af063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201af318aa0d3167fafa09106e98dd9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65639672f444b3d4dc6fc4f357ddbd5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/e11c7f0c-57e4-4c53-84ed-7186352305cb.png?resizew=189)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/600e5b951c7065c6bb20e5adc5200e95.png)
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8 . 在①
,②
,③
三个条件中任选一个,补充在下面问题中,并加以解答.
已知
的内角A,B,C所对的边分别是a,b,c,若_____,且a,b,c成等差数列,则
是否为等边三角形?若是,写出证明;若不是,说明理由.
注:如果选择多个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76e0d4945f6b06a3f0791ab7ee3d276d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4542e5dfa3702fb2824682f0731a1c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f1d5b50db0b87df7a8907a4e0699b6.png)
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
注:如果选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
2020-04-05更新
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3080次组卷
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15卷引用:海南、山东等新高考地区2021届高三上学期期中备考金卷数学(B卷)试题
海南、山东等新高考地区2021届高三上学期期中备考金卷数学(B卷)试题2020届山东省高三下学期开学收心检测数学试题2020届山东省济宁市高三下学期第五次线上考试数学试题2020届山东省青岛市第一中学高三下学期第五次在线考试数学试题海南省2019-2020学年高三高考调研测试数学试题(已下线)第5篇——三角函数与解三角形-新高考山东专题汇编江苏省镇江市2019-2020学年高二下学期期末数学试题江苏省南京市秦淮中学2020-2021学年高三上学期期初调研数学试题2021届高三高考必杀技之结构开放题专练广东省梅州市2021届高三一模数学试题江苏省镇江市第一中学2020-2021学年高三上学期12月阶段性考试数学试题广东省梅州市2021届高三下学期3月总复习质检数学试题河北省衡水市第十四中学2020-2021学年高二下学期一调(月考)数学试题(已下线)专题18 三角恒等变换-学会解题之高三数学万能解题模板【2022版】(已下线)NO.2 方法专区——解答题的解题技法(一)(讲)-2022年高考数学二轮复习讲练测(新教材·新高考地区专用)
名校
9 . 如图,A、B、C、D都在同一个与水平面垂直的平面内,B、D为两岛上的两座灯塔的塔顶,测量船于水面A处测得B和D点的仰角分别为75°、30°,于水面C处测得B点和D点的仰角均为60°,AC=1千米.
(2)计算B、D之间的距离(结果精确到米)
(2)计算B、D之间的距离(结果精确到米)
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10 . 在△ABC中,内角A,B,C所对的边分别为a,b,c,已知
.
(1)求证:a,b,c成等比数列;
(2)若
求a+c的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc58e5d3f9ec18c5e8960584e7549a6.png)
(1)求证:a,b,c成等比数列;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a92830e793836a489e8e39d07189d58.png)
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2020-01-07更新
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694次组卷
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2卷引用:重庆市育才中学2014-2015学年高一下学期期中数学(文)试题