在
中,a,b,c分别是角A,B,C的对边,并且
.
(1)求
的最大值;
(2)已知______,______,计算
的面积.
请在①
,②
,③
这三个条件中任选两个,将问题(1)补充完整,并作答.
注意:只需选择其中的一种情况作答即可,如果选择多种情况作答,以第一种情况的解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155ecc4a22a0933429ed61e214a7aa27.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bcb0cf5182f70cf5f2737b709b4a9c.png)
(2)已知______,______,计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
请在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1a7b6f0d417eab8cb47d187e85b506.png)
注意:只需选择其中的一种情况作答即可,如果选择多种情况作答,以第一种情况的解答计分.
更新时间:2021-09-09 20:09:55
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【推荐1】问题:在
中,角A,B,C的对边分别是a,b,c,且
,
,_______,求:
(1)角B的大小;
(2)边c的长.
从下面给出的三个条件中任选一个,补充在上面的问题中,并进行解答.
①
;②
;③
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39372e70f5465f8cf0c5ebf7653f0e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e44255421dbf68d84f86551b34a57656.png)
(1)角B的大小;
(2)边c的长.
从下面给出的三个条件中任选一个,补充在上面的问题中,并进行解答.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca56db35ba6aee544a0f672bae36b55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0a5794f83e8331d55da4c790e550ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be12358a09a12e3139f01a7992ccdd4.png)
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【推荐2】在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f7219b60e8d0aceae7aa39c6eba5b20.png)
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