21-22高一·湖南·课后作业
1 . 求证:
(1)若
,且
,则
;
(2)若
,且
,
同号,
,则
;
(3)若
,且
,则
.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e271b6e63206285461a7552d11efd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4477891a0849eed531ba60d9a2549582.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.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/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90882db1028f1e2440339d203c1901e6.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d89ab55ffb93cc48f077b542dbd25aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9ff675ef70be29c94704f11dd900d9.png)
您最近一年使用:0次
21-22高一·湖南·课后作业
2 . 回答下列问题:
(1)若
,且
,能否判断
与
的大小?举例说明.
(2)若
,且
,能否判断
与
的大小?举例说明.
(3)若
,且
,能否判断
与
的大小?举例说明.
(4)若
,
,且
,
,能否判断
与
的大小?举例说明.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44cbc322861846709c08c7f1da746848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea712984ea5017140e20bee226fd5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf5b1fe01c3300d5b11313aa6f2eefc7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf7adcc976209d4b686156120bea276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1810555c0c28fe352841322b85bbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d02a08024fd5d4305bc2638b472fa48.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44cbc322861846709c08c7f1da746848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f384e98d574fa2676d61624285f88188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0aa3929a1e72941a617ec65e2abc66.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf7adcc976209d4b686156120bea276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef20073a12bab727faa217718b63414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f787941cb1abfe9bb757276b765c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169aa35f106034e7d63cb1505042b4cf.png)
您最近一年使用:0次
2022-02-23更新
|
1946次组卷
|
6卷引用:湘教版(2019)必修第一册课本习题2.1.1等式与不等式
湘教版(2019)必修第一册课本习题2.1.1等式与不等式(已下线)第二章 一元二次函数、方程和不等式-【优化数学】单元测试基础卷(人教A版2019)(已下线)2.1.1 等式与不等式章节综合测试-一元二次函数、方程和不等式(已下线)3.1 不等式的基本性质(已下线)专题02 一元二次函数、方程和不等式1-2024年高一数学寒假作业单元合订本
21-22高一·湖南·课后作业
3 . 如图,两名搬家工人要将一个大衣柜搬出房间,已知衣柜长1.5m,宽0.8 m,高2.5 m,房门的宽为1.2 m,高为2.2 m.试问此衣柜的倾斜度要在多少度以下,才能顺利通过房门?(
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1887301dd175e551ad9031da9b003a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4751f9bf1793ece0ea5c690c9753da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf7a359f6ce5f869cd034943106da50.png)
您最近一年使用:0次
21-22高一·湖南·课后作业
4 . 如图,已知平行四边形ABCD两邻边长为a和
,两对角线的一个交角为
,求该平行四边形的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f9fcab2886322d40bb5b52d997984fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f761debd21c56d263514d7d18fc0347b.png)
您最近一年使用:0次
21-22高一·湖南·课后作业
5 . 如图,一艘船以
的速度向正北航行,在A处看灯塔S在船的北偏东20°方向上,30min后航行到B处,在B处看灯塔S在船的北偏东60°方向上,求灯塔S到B处的距离(精确到
,参考数据:
,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d172bb9858154d4b5615e39f42d6afe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042a61a8e71f709ede82c3d50941d38f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503d0115e915f067f33c16b1d07f39c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069a138a2ef6614c745b4bfe20c53e6f.png)
您最近一年使用:0次
6 . 在
中,a,b,c分别是角A,B,C所对的边,且
.
(1)求
的大小;
(2)若
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155ecc4a22a0933429ed61e214a7aa27.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c747944478053389224dffa40c6ba8b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
您最近一年使用:0次
2022-02-22更新
|
670次组卷
|
9卷引用:湘教版(2019)必修第二册课本习题 习题1.6
湘教版(2019)必修第二册课本习题 习题1.6(已下线)浙江省宁波市云龙中学09-10学年高一下学期期中考试数学试卷(已下线)2012-2013学年浙江省宁波万里国际学校高一下学期期中考试数学试卷(已下线)1.6.3 解三角形应用举例重庆市二0三中学2021-2022学年高一下学期3月月考数学试题(已下线)2011届广东省南塘中学高三9月月考数学卷(已下线)2011-2012学年广东省汕头市达濠中学高二上学期期末考试理科数学新疆昌吉市2017-2018学年高二上学期期末考试数学(理)试题新疆昌吉市2017-2018学年高二上学期期末考试数学(文)试题
21-22高一·湖南·课后作业
7 . 在
中,
,
,
,求a,c的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d803e27871810c6b8a7d6169144dd61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9260e58edfb1db1c7d9421245062d502.png)
您最近一年使用:0次
21-22高一·湖南·课后作业
8 . 在
中,a=3,
,
,解这个三角形,并求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fc97c111826fb6d39bf72ed9ad5585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
9 . 已知△
中,
(1)若a=3,
,
,求c;
(2)若a=8,
,
,求c;
(3)若a=7,
,
,求c;
(4)若a=14,
,
,求∠C.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(1)若a=3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6129fbf40a950fc8c516f0abaab21957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ceeb6ac7f248397e846f5b61fac6c2f.png)
(2)若a=8,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c0a7001510f8f30cfca1450928d099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32436704a722d5e568ff5c175bf3c662.png)
(3)若a=7,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e459e24a3c880c0aaa155e56a8dde9c.png)
(4)若a=14,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c85ea29310d91178c68c1fd93d01d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d35d8d8bb0dc17f2f86fe5b230a2b8.png)
您最近一年使用:0次