名校
1 . (Ⅰ)已知向量
,求
与
的夹角的余弦值;
(Ⅱ)已知角
终边上一点
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f7c4577433bf7679a5bc7ef89b0d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
(Ⅱ)已知角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a0cc78c3e209937bd33da16b04044a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83dcba27522169c5d01b2ffe1bd2fe4.png)
您最近一年使用:0次
2019-09-14更新
|
321次组卷
|
2卷引用:四川省宜宾市叙州区第一中学校2019-2020学年高一下学期第四学月考试数学(文)试题
2 . 已知
.
(1)若
在第三象限,求
的值.
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3ecdab508ee1a94ccbe623ae4dde44.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1486450f300f451e711d2238eaca1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a15d4c61a1c7f76ccd6e4c43c6aaf1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8277243b779353a0e73806182a040e42.png)
您最近一年使用:0次
名校
3 . 已知角
的顶点在原点,始边与
轴的非负半轴重合,终边在射线
上.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a520ba16f45093b4ccddfe272c422d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7f480621fe191e1544b1f043c266d7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17e8bdd802fb562172b488cb06f4616.png)
您最近一年使用:0次
2018-02-11更新
|
1749次组卷
|
4卷引用:四川省广安市2017-2018学年高一上学期期末考试数学试题