在
中,
,
.再从①
②
选一个作为已知,求:
(1)
,
的长;
(2)
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e38f550e95b2950f91e8ec1798b94109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6824385e828fea3eecc292ae6c296f2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27718c7561d646d66db48e330332471c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f71211e891243960e8620d78ce78e1e.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
更新时间:2021-07-13 14:35:33
|
相似题推荐
解答题-问答题
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较易
(0.85)
【推荐1】在
中,内角A,B,C的对边分别为a,b,c,
,且_________.
在①
,②
这两个条件中任选一个,补充在上面横线中,并解答下列问题.注:如果选择多个条件分别解答,按第一个解答计分
(1)求
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a95f9136fe8f648f21b332447a49d4.png)
在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faef87744ed2a4d51009b0d52c360cbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b53266b35a4e33af539d645e24d6ac.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f384e98d574fa2676d61624285f88188.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780a4946dc57923c2c265be7e414436c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐2】在
中,角A,B,C的对边分别是
,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc7eb7c88b487f83ce1a3573505c6d6a.png)
(1)求角A.
(2)若边长
,且
的面积是
,求边长b及c.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc7eb7c88b487f83ce1a3573505c6d6a.png)
(1)求角A.
(2)若边长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ca820a456491348e72587e4fe10bc6.png)
您最近一年使用:0次