解题方法
1 . 已知a,b,c分别为
内角A,B,C的对边,
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec155adb81dcd0f526882950c32f90a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.1 | B.2 | C.1或7 | D.2或14 |
您最近一年使用:0次
2 . 已知
的内角
满足
,
,则角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e76f08c6853551e81255993c5374348e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f79055aad02397cdd19d64a7e6bd3b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
您最近一年使用:0次
2018-02-28更新
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440次组卷
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2卷引用:陕西省安康市2017-2018学年高二上学期期末考试数学(理)试题