名校
解题方法
1 . 在锐角三角形
中,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afe5851cf31828ecba17a97f539e07c.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d4178c1e754cff1b3773d0c676ae14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afe5851cf31828ecba17a97f539e07c.png)
您最近一年使用:0次
2018-07-16更新
|
664次组卷
|
2卷引用:【全国百强校】辽宁省瓦房店市高级中学2017-2018学年高一下学期期末考试数学试题
2 . 在平面直角坐标系
中,已知任意角
以坐标原点
为顶点,
轴的非负半轴为始边,若终边经过点
,且
,定义:
,称“
”为“正余弦函数”,对于“正余弦函数
”,有同学得到以下性质:
①该函数的值域为
; ②该函数的图象关于原点对称;
③该函数的图象关于直线
对称; ④该函数为周期函数,且最小正周期为
;
⑤该函数的递增区间为
.
其中正确的是__________ .(填上所有正确性质的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cfb549ea82986aafdaf9611675dedeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18961f5ae816db054ba8a5fb9aaccf11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8857ff3b70a642ce59ce4a4f5539a392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e629ad69831bcbdc74c5f08e52a997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5abce46ea2f260f6b7ee062067815e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b7c7923d87572ff5d28bd421f70b265.png)
①该函数的值域为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35e84fd71f12b97bdceb2b26edaf96c.png)
③该函数的图象关于直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea11d92122bdfbd0bab9642bfa14ad6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9fdc1f8ed0ae44b54a9a2a3aca2db4.png)
⑤该函数的递增区间为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55a7709a9688ee2d9d4e4cfeb869bd3.png)
其中正确的是
您最近一年使用:0次
2018-06-07更新
|
1218次组卷
|
8卷引用:辽宁省瓦房店市高级中学2019-2020学年高一下学期期末考试数学试题
辽宁省瓦房店市高级中学2019-2020学年高一下学期期末考试数学试题【全国百强校】广西宾阳县宾阳中学2017-2018学年高一5月月考数学试题(已下线)2017-2018学年下学期期末复习备考之精准复习模拟题高一数学(C卷)(第02期)【全国市级联考】江西省新余市2017-2018学年高一下学期期末考试数学(文)试题江西省上饶市横峰中学2018-2019学年高一下学期第三次月考数学试题(已下线)【新教材精创】期中模拟卷基础篇(1)江西省彭泽县第一中学2020-2021学年高二上学期第一次月考数学试题河南省商丘市第一高级中学2021-2022学年高一下学期开学测试数学试题
3 . 已知圆锥的底面直径为1,母线长为1,过该圆锥的顶点作圆锥的截面,则截面面积的最大值为__________ .
您最近一年使用:0次
4 . 在锐角
中,
分别为角
所对的边,满足
,且
的面积
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24db09e56b38eefebf1e98662cc07f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0f5f508629d717f5576128ca84cdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf9065ad58242f21e446b1104bba2832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa1906383f7fb6132f07851fa62e764.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc835b751effe731c250580fb306bb36.png)
您最近一年使用:0次
2018-04-12更新
|
576次组卷
|
3卷引用:辽宁省大连市普兰店区海湾高级中学2019-2020学年高三上学期期中数学(文)试题
名校
解题方法
5 . 下列命题中:
①
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60775575f4aa98407260a240a0a75ec.png)
②数列
的前
项和
,则数列
是等差数列.
③锐角三角形的三边长分别为3,4,
,则
的取值范围是
.
④若
,则
是等比数列
真命题的序号是______________ .
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60775575f4aa98407260a240a0a75ec.png)
②数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://img.xkw.com/dksih/QBM/2017/11/20/1821208024530944/1822802961588224/STEM/59c093a2ff3d4975bbc4f6826a371fda.png?resizew=13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a5df4d666ed956941509cae1ed53f26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
③锐角三角形的三边长分别为3,4,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41f5767cf892d9a5f9215abcc552997.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e44407c862e2fe10d79c22a16261db8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
真命题的序号是
您最近一年使用:0次
2017-11-22更新
|
470次组卷
|
2卷引用:辽宁省普兰店市第一中学2018-2019学年高二上学期期中考试数学试题
解题方法
6 . 函数
的单调递减区间是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060eda7773389cd3f0b188631023fdb3.png)
您最近一年使用:0次
7 . 已知
,且
,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f102439ebd1efd422f04209ecec2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ad7ff65368448ed398a6b86391b567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
您最近一年使用:0次
8 . 在
中,角
,
,
所对的边分别为
,
,
,且
,
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/abc7bd15c867b729cd44ef29a04b7880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b7c2add864a7819219edce0d26f8395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
您最近一年使用:0次
2017-10-17更新
|
983次组卷
|
2卷引用:辽宁省庄河市高级中学、沈阳市第二十中学2018届高三上学期第一次联考数学(理)试题
9 . 在
中,角
的对边分别为
.已知
,且
,则
的面积的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/0017af52a00a2a5da5ec0dc74fb86039.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
解题方法
10 . 在
中,角
、
、
所对的边分别为
、
、
,且
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
________ .
![](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/8551ceb2715ce6f9b5a5e630251c732a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64138cda96f69d205d877d788035557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f235123f2cc571571cfded59f32145d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
您最近一年使用:0次
2017-08-15更新
|
658次组卷
|
2卷引用:辽宁省庄河市高级中学、沈阳市第二十中学2018届高三上学期第一次联考数学(文)试题