若△ABC的三边为a,b,c,它的面积为
,则内角C等于
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571459601514496/1571459607101440/STEM/06d85ede69554c7984c962b7248f6fc2.png)
A.30° | B.45° | C.60° | D.90° |
12-13高二·河南焦作·阶段练习 查看更多[1]
(已下线)2013-2014学年河南省武陟一中西区高二第三次月考理科数学试卷
更新时间:2016-12-02 15:25:18
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【推荐1】设
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依次成公差不为0的等差数列,则( )
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【推荐2】已知双曲线
的左、右焦点分别为
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【推荐1】如图,平面
平面
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【推荐2】已知双曲线
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解题方法
【推荐1】在
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您最近一年使用:0次
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【推荐2】在
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A.直角三角形 | B.钝角三角形 |
C.等边三角形 | D.不能对形状进行判断 |
您最近一年使用:0次
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【推荐1】在
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【推荐2】在△ABC中,内角A、B、C的对边分别是a、b、c,若c2=(a﹣b)2+6,△ABC的面积为
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