1 . 已知
.
(1)求
和
的值;
(2)若
为第四象限角,当
时,求函数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d585c0f04cd6e187f767be6a8a374cb9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850dba25bf0f5f13541bf9b6ec12b84d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bcb22441213a6684859467b2101df08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d971fc8e14e4172797a8a26f9556095.png)
您最近一年使用:0次
2024-02-13更新
|
258次组卷
|
4卷引用:四川省乐山市2023-2024学年高一上学期期末教学质量检测数学试题
解题方法
2 . 已知函数
.
(1)将函数
的解析式化简,并求
的值,
(2)若
,求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ec97089345fd5da6b8a54283e6ad14.png)
(1)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ff6995b4d2d18c865c51488b9c1bb0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31aba8ca22579a6d5eed632aecff4548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2024-01-24更新
|
316次组卷
|
5卷引用:四川省乐山市2023-2024学年高一上学期期末教学质量检测数学试题
四川省乐山市2023-2024学年高一上学期期末教学质量检测数学试题四川省广安市2023-2024学年高一上学期1月期末教学质量检测数学试题四川省遂宁市2023-2024学年高一上学期期末质量监测数学试题四川省巴中市2023-2024学年高一上学期期末数学试题(已下线)7.3.3 余弦函数的性质与图象(2)-【帮课堂】(人教B版2019必修第三册)
解题方法
3 . 已知锐角
的内角
,
,
所对的边分别为
,
,
,若
,且______.
(1)求角
;
(2)求
面积的取值范围.
在①
,②
,这两个条件中任选一个,补充在横线上,并解答.
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/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/2bd5b9bbd3d22bd2cef53dd4b9691257.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/723bd39f26f0a0b580d4d99ad32cc2fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209f68f37ab2832c2840b9c569d02096.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
解题方法
4 . 已知
,计算下列各式的值:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb497ea9b1b7a8bb262b8b268048d48.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e4bf52965be42c041eff3a63c051ab.png)
您最近一年使用:0次
名校
5 . 已知函数
.
(1)求
的单调增区间;
(2)当
时,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5eeb153001137e687d455cad0ed3053.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c82ca0ae8074ef3decac2f0504ed139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
您最近一年使用:0次
2023-07-08更新
|
319次组卷
|
2卷引用:四川省乐山市2022-2023学年高一下学期期末数学试题
名校
6 . 已知函数
.
(1)当
时,求函数
的周期和对称中心;
(2)当
时,求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad20f59dd698f149277e34c5fd7cb181.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafce249be1aeee0581417db4ce841db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d2ee8d92ca24712b34aad14a03e166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
7 . 如图,为测量山高
,选择A和另一座山的山顶C为测量观测点,从A点测得点M的仰角
,C点的仰角
以及
;从C点测得
.已知山高
,求山高
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3181e58f09e9fec4e43e422b82831b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aabecf66d94e4094f9cc46fd8ee050f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a61ee9c2a3a4f2690dad01ef53ede1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a56b88dab0e12fb1051a2f19500187bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5412c2c0baa2fc01485358af68d6e885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/2022/7/6/3016732564865024/3017013478858752/STEM/8467a3e94ee74e8da2720572ab8bcd5a.png?resizew=242)
您最近一年使用:0次
8 . 已知函数
,该函数图象一条对称轴与其相邻的一个对称中心的距离为
.
(1)求函数
的对称轴和对称中心;
(2)求
在
上的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751b66b92a37770fe9c900977b58a5cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879fc3bd369c499652d887373fca5ca5.png)
您最近一年使用:0次
解题方法
9 . 已知
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36abe4c09ffa30b4573b655cfb63fb5d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da372ddb7d1bb47dd504d4c68a4c9de7.png)
您最近一年使用:0次
名校
10 . 在
中,角
,
,
所对边分别为
,
,
,且向量
,
,满足
.
(1)求角
的大小;
(2)若
,
,
成等差数列,且
,求
边的长.
![](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/c72ddb41564a7213d0406191cd7c7571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd26c9442fe7f4a67c30ce60bd48812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306cd78b1b7c60b1751498fc45b09574.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be013e96b47d28e4904cc11cb1394a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2021-08-17更新
|
297次组卷
|
2卷引用:四川省乐山市十校2020-2021学年高一下学期期中数学试题