解题方法
1 . 在
中,角
所对的边分别为
,且
.
(1)求证:
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/1805bef114e6dca3cb833801cbe84f4f.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9adb9fd694606f1fb640f28acd3ecb4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402f1010e94be78552ed4c45548b1b8.png)
您最近一年使用:0次
名校
解题方法
2 . 在三角形
中,角
所对的边分别为
.
(1)求
的值;
(2)若
,
的面积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c1a68275a6dc392f5e0ee0613921d1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a8062f3e04fbde226248314402098f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5b763032c085a1e60822d8dc1b3605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2024-01-15更新
|
612次组卷
|
2卷引用:江苏省南通市如东中学、如东一高等四校2023-2024学年高三上学期12月学情调研数学试题
解题方法
3 . 已知
,且
.
(1)化简并求值:
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f896ad30dbfae8a8fe6fc580a7af494.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0f80c815f0ad841ffc0319ab1cd0f6.png)
(1)化简并求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9eeea7fdb06c25252eeea9e035211db.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59293d90383d56af29d8f8fd6d96af3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/336abb5d2a2a7f19f57a1dac867838ae.png)
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名校
解题方法
4 . 平面直角坐标系
中,单位圆与
轴正半轴交于点
,角
的终边与单位圆的交点
位于第二象限.
(1)若弧
的长为
,写出
的坐标,并计算扇形
的面积;
(2)角
的终边绕点
逆时针旋转
后恰与角
的终边重合,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)若弧
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/732250efe9c8c0cbca127fb2ed2a4bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828fcf6ed16b5dae1b572d471f5ed7a7.png)
(2)角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfea3c84a996fefc1bcdf7f6eecf1a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc24d605ad707ad0e76059d8a31f50d3.png)
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2024-01-15更新
|
132次组卷
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3卷引用:上海市华东师范大学附属东昌中学2023-2024学年高一上学期期末考试数学试卷
上海市华东师范大学附属东昌中学2023-2024学年高一上学期期末考试数学试卷(已下线)6.2 常用三角公式-高一数学同步精品课堂(沪教版2020必修第二册)河南省郑州市宇华实验学校2023-2024学年高二下学期开学摸底考试数学试题
名校
5 . (1)已知
,若
、
是关于x的一元二次方程
的两实根,求
的值;
(2)已知
,且
,求
及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a861b8aef4d0eca4734b3cd8cfaa3b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f55b8836b41be612a52ca9caf97006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24d7208c0d3c59b8b9970452560821a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/617e59c1afb7dc761f5b373bc820ecff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483347d03cffbb2951de8ab73a684b.png)
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6 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e8e556a24a7b41132fae44e33c82e5c.png)
的最小正周期为
,且
.
(1)求函数
的解析式,并分别写出
取最大值与最小值时相应
的取值集合;
(2)求函数
,
的单调递减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e8e556a24a7b41132fae44e33c82e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8994bc6c1c192e9153b755719d63790e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104375baf5cef5eb92cfc7cf13b80193.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdcf32863cfb1aefeb56b45c1ae79e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c1547d887b29e39542997731a5288b.png)
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7 . 已知函数
(
,
,
)的最小值为1,最小正周期为
,且
的图象关于直线
对称.
(1)求
的解析式、对称轴、对称中心;
(2)求函数
在
上的单调递减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa2681a10eaff59bfdab57af6d7f6041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb61a448347a3f8c1f126d1c00730cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9895bf4192f5c55c16f8270d53c49b13.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af46e7742b81527867de26c973c67b00.png)
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2024-01-14更新
|
466次组卷
|
3卷引用:四川省内江市隆昌一中2023-2024学年高一上学期期末模拟数学试题(二)
四川省内江市隆昌一中2023-2024学年高一上学期期末模拟数学试题(二)(已下线)7.3.3余弦函数的性质与图像-高一数学同步精品课堂(人教B版2019必修第三册)湖南省常德市汉寿县第一中学2023-2024学年高一下学期入学考试数学试题
8 . 已知函数
的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/19d9d5c1-7ebb-4b3e-b913-8fa3a6bce860.png?resizew=152)
(1)求
的值;
(2)求函数
的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9738572ba46801e6a01c52103f0eb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/19d9d5c1-7ebb-4b3e-b913-8fa3a6bce860.png?resizew=152)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b651c83ed280b34e1144bd7b22dd04.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b0ca89eaa2b87e520f0119e1a0b57d.png)
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2024-01-14更新
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384次组卷
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2卷引用:吉林省部分名校2023-2024学年高一上学期期末联合考试数学试题
名校
解题方法
9 . 在
中,角A,B,C的对边分别为a,b,c,已知
.
(1)求角C的大小;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262f3b57d246f141b0274f7a5d870324.png)
(1)求角C的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f002f960ec07ea229ed243e2d991d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
10 . 在
中,已知
,
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93290a70c2e8430b7a14cd78e6376cc5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32f2d4d1d2c16c54b2caef17840bfcb.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e32835683b97e49cc0b61c9682a28e.png)
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