单选题 较易0.85 引用1 组卷442
已知
的内角
,
,
的对边分别为
,
,
,已知
,
,
,则
的面积为
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572933430534144/1572933436465152/STEM/e32a2dd1a26c46919076e577d97fa57b.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572933430534144/1572933436465152/STEM/aa8f52b6cbf846509188733a5302209e.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572933430534144/1572933436465152/STEM/79d24fa2ca694dbfa862b4a80aa579d4.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572933430534144/1572933436465152/STEM/0612b5cf4a314ae980317441202fd6bb.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572933430534144/1572933436465152/STEM/4ac9b5c6c99b4ad88e277bb4d7442a39.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572933430534144/1572933436465152/STEM/8cf936d18f9f41b1a9292475013d7cfc.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572933430534144/1572933436465152/STEM/3e13f3279b6c4b79a28f565a9949d060.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572933430534144/1572933436465152/STEM/cd429b9e303d426b86500063829e1350.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572933430534144/1572933436465152/STEM/8aaf9762fc3f469f88d8b4b4ea3e9ece.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572933430534144/1572933436465152/STEM/c1736c3ef2a144fe87ca21965e202d0e.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572933430534144/1572933436465152/STEM/e32a2dd1a26c46919076e577d97fa57b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
2016·湖北襄阳·二模
类题推荐
如图,某船在A处看见灯塔P在南偏东15°方向,后来船沿南偏东45°的方向航行30km后,到达B处,看见灯塔P在船的西偏北15°方向,则这时船与灯塔的距离是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/e1d4d9de-cb09-4dda-95fb-5ea518d78c86.png?resizew=131)
A.10km | B.20km | C. | D. |
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