名校
解题方法
1 . 已知A,B,C为
的三个内角,向量
,
,且
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa55c36920e2f2bf7cbe03a2ce6481d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8750a25b99f0774faf40ad39c07a4f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6a5b690147ddc09367fa3a482a10da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
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15-16高二上·上海浦东新·期中
名校
2 . 已知
,
与
的夹角为
,
与
的夹角为
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095e9dea543dee61da4f053b18cf3319.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66cf7bfc3d83fa81c06a60e02e51db7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93fa313adc4ac7608ba9449fd755212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/248998856b31f8cbaf92c8845b8799e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095e9dea543dee61da4f053b18cf3319.png)
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名校
解题方法
3 . 在平面直角坐标系
中,钝角
的顶点为坐标原点,始边与
轴的非负半轴重合.若
的终边与单位圆交于点
.
(1)求
的值;
(2)求
和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728f6139e519fb0578548516d6fb83b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728f6139e519fb0578548516d6fb83b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe87f687a8e78c3944e878d9bd5e3bf.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
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名校
解题方法
4 . 已知
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2061f442c24e452dfe107e389fb0f4d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba781b7dafa6870b89c06ac56299d5d.png)
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名校
5 . 已知
,若
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38cd41a999930c01d13f952405662d78.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c821115bf1c9f05a45fb5f1ae4622f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da712bc4b03a4ffbc7ce654c39f36854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38cd41a999930c01d13f952405662d78.png)
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名校
6 . 在
中,角A、B、C所对的边分别为a、b、c,若
,且
.
(1)求角A、B、C的值;
(2)若
,求函数
的最大值与最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2681f0d1732bcaa8d6362fbd1fa6caa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340136b41ede83397a4dcb43368c88e8.png)
(1)求角A、B、C的值;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f262a469d41479a734deb7e56726a05.png)
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