20-21高一下·浙江·期末
名校
解题方法
1 . 已知
内角
,
,
所对的边分别为
,
,
,面积为
.若
,
,则
的形状是( )
![](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/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af30a92eda72d7b4daf2dc17c0c078af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd813c2cb1c3ad15a943b5aa847256a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.等腰三角形 | B.直角三角形 |
C.正三角形 | D.等腰直角三角形 |
您最近一年使用:0次
2021-08-05更新
|
1668次组卷
|
15卷引用:四川省内江市2020-2021学年高一下学期期末数学试题
四川省内江市2020-2021学年高一下学期期末数学试题(已下线)【新东方】双师156高一下江西省兴国县第三中学2020-2021学年高一下学期期中考试数学(兴特班)试题河北省石家庄市2020-2021学年高一下学期期末数学试题重庆市杨家坪中学2020-2021学年高一下学期第一次月考数学试题福建省福州市平潭县新世纪学校2020-2021学年高一下学期期中考试数学试题四川省眉山市仁寿第一中学南校区2021-2022学年高二上学期入学考试数学试题(已下线)考点15 正、余弦定理及解三角形-备战2022年高考数学一轮复习考点帮(浙江专用)湖北省荆州中学2021-2022学年高一下学期6月月考数学试题山东省新泰市第一中学2021-2022学年高一下学期第二次质量检测数学试题江苏省泰州中学2021-2022学年高一下学期期中数学试题(已下线)5.4 正、余弦定理(精练)(提升版) - 1山东省聊城市2022-2023学年高一下学期期中数学试题山东省临沂市罗庄区2022-2023学年高一下学期期中数学试题江苏省苏州市苏州高新区一中2022-2023学年高一下学期5月月考数学试题
名校
2 . 在
中,角
、
、
所对的边分别为
、
、
,若
,
,则当角
取得最大值时,
在
方向上的投影是( )
![](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/246305a1fab6d08c03984a273e127684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ecf0e738c92c9a6d20d274398e137b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a1b3d5f4068fbcba6e4b47971d51a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305d5f36a9fdbc840161b36563923195.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-08-03更新
|
288次组卷
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2卷引用:四川省内江市2020-2021学年高一下学期期末数学试题
名校
3 . 在
中,
、
、
分别为内角
、
、
所对的边,
且
,若点
是
外一点,
,
.则平面四边形
的面积的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/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/31fa9e3f1347c15c7b3141692a74bc37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac73d1e1a6a7f2a941f4393dc4334998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9b5996067a3fc9adcf0ca178dddf03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea16ceca816f7d3d50650af141baf42.png)
A.![]() | B.![]() | C.3 | D.![]() |
您最近一年使用:0次
2021-08-03更新
|
426次组卷
|
5卷引用:四川省内江市2020-2021学年高一下学期期末数学试题
解题方法
4 . 在
中,三个内角
、
、
所对的边分别是
、
、
,且满足
.
(1)求出角
的值;
(2)若
,求
的周长的范围.
![](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/80c9ad02cd4068c70b52d28d641c7c62.png)
(1)求出角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
5 . 已知向量
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be2dd167392a87d125bfd91ab3cb396.png)
(1)求
的最小正周期和单调递增区间;
(2)在
中,
,
,且
的面积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93d63279ddbe46593a2b5e159862c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b384a1b9edd176ab3150694e63a90bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be2dd167392a87d125bfd91ab3cb396.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63bf44eb4075aefaf2b6b5a842e00e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1d6201ae8b341fe7c2e578429dddcb.png)
您最近一年使用:0次
2021-07-24更新
|
317次组卷
|
2卷引用:四川省内江市威远中学2020-2021学年高一下学期期中考试数学(理)试题
名校
6 . 在四边形
中,
,
,
,
,
,
,则对角线
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f144992e1cbee34868abce1e5ad38c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddda8bee262f17d51ee3d70cf63d6b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3432b3b7559ceb4cb80c6069291ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd99a6862833b220a7371852a3570bc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
2021-07-19更新
|
356次组卷
|
3卷引用:四川省内江市威远中学2020-2021学年高一下学期期中考试数学(理)试题
名校
7 . 如图所示,某镇有一块空地
,其中
,
,
.当地政府计划将这块空地改造成一个旅游景点,拟在中间挖一个人工湖
,其中
,
都在边
上,且
,挖出的泥土堆放在
地带上形成假山,剩下的
地带开设儿童游乐场.设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/1169cc72-0651-4f12-911b-94801ab39879.png?resizew=125)
(1)求
的长(用
表示);
(2)为节省投入资金,人工湖
的面积要尽可能小,问如何设计施工方案,可使
的面积最小,最小面积是多少.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29ac2834e2f2f1c32149fe31f107134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac60c80d4e7a767b37931f6720d7ade6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b0eb72986587ffecf87c22a224bcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edafce95aade0386bc0d78f679dcf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf2b5e712b42f748a3c30bb5d160c18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb35158a52a23a6e57ff890cef8c7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/1169cc72-0651-4f12-911b-94801ab39879.png?resizew=125)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)为节省投入资金,人工湖
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
您最近一年使用:0次
名校
解题方法
8 . 已知锐角
中,
,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3596aecd1d0f3d4ace781285e7d7be31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4012d603380ff366efacd62a6a267fbf.png)
您最近一年使用:0次
名校
解题方法
9 . 设锐角
的内角
,
,
的对边分别为
,
,
,若
,则
的取值范围是( )
![](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/baa8d75a6638e08eedbff8662267da6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd950ec83d93596468e3aff0bb91e0e9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-05-31更新
|
1360次组卷
|
8卷引用:四川省内江市威远中学校2020-2021学年高一下学期6月月考数学(理)试题
四川省内江市威远中学校2020-2021学年高一下学期6月月考数学(理)试题四川省内江市威远中学校2020-2021学年高一下学期6月月考数学(文)试题2021年全国高考临门一卷 湖南数学(二)黑龙江省哈尔滨师范大学附属中学2021-2022学年高二上学期开学考试数学试题(已下线)模块综合练02 三角函数与解三角形-2022年高考数学(文)一轮复习小题多维练(全国通用)(已下线)热点02 三角恒等变换与解三角形-2022年高考数学【热点·重点·难点】专练(全国通用)(已下线)易错点05 三角变换及三角函数的性质-备战2022年高考数学考试易错题(新高考专用)(已下线)专题06 三角恒等变换与解三角形-2022年高考数学毕业班二轮热点题型归纳与变式演练(新高考专用)
20-21高三下·浙江·期末
名校
解题方法
10 . 在
中,内角A,B,C的对边分别为a,b,c,
的面积为
,则
的最大值________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbff84327e964f912a54032e76ccc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c1d47a600a0875953df2e8cc580ad9.png)
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