解题方法
1 . 若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec24738276dca1046d5fb7730d232bc2.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf4ca67225f5d4ac6c163de7d69a0ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb2c3fa35b7a6f4a1a947851316258f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec24738276dca1046d5fb7730d232bc2.png)
您最近一年使用:0次
2020-11-21更新
|
1065次组卷
|
4卷引用:吉林省通榆县第一中学2020-2021学年高三上学期期中考试数学(理)试题
名校
解题方法
2 . 已知台风中心位于城市
东偏北
(
为锐角)的150千米处,以
千米/时沿正西方向快速移动,2.5小时后到达距城市
西偏北
(
为锐角)的200千米处,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4ef973817d347fc468c0a1f776d798.png)
_______ 千米/时.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc13a607ac0c7f76d252d7cb1bb040fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a43b347d8c038e537155cad5528c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4ef973817d347fc468c0a1f776d798.png)
您最近一年使用:0次