2013·江西·一模
名校
1 . 如图,在
中,
,垂足为
,且
.
![](https://img.xkw.com/dksih/QBM/2019/4/26/2190807505223680/2191384461107200/STEM/22026a9c38384157a4f4109d3132e2eb.png?resizew=109)
(1)求
的大小;
(2)设
为
的中点,已知
的面积为15,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b40d57a816f14153fc49686e2be356.png)
![](https://img.xkw.com/dksih/QBM/2019/4/26/2190807505223680/2191384461107200/STEM/22026a9c38384157a4f4109d3132e2eb.png?resizew=109)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次
2016-12-02更新
|
1214次组卷
|
5卷引用:重庆市铜梁一中2018-2019学年高一3月月考数学试题