已知点
、
为椭圆
:
左、右焦点,在
中,点
为椭圆上一点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b23b9be402ae2139809e882e53a1f29.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9df1061c3ba5151ba2f7359acaf356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b23b9be402ae2139809e882e53a1f29.png)
更新时间:2021-01-27 20:00:11
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解题方法
【推荐1】
的内角
的对边分别为
,且
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【推荐2】在
中,若
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的最大值是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐1】设
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42dffb7a0a2e0153236d4e67e3ae3b20.png)
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【推荐2】已知两定点
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________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25a47e8ecd2cdc48a3d54bb43f3fdf6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2319264f2b722c45c3f0204247799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e49be3af0c046cd7501a8a6c8801d3b.png)
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