在
中,内角
所对的边分别为
,且
.
(1)求
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4abb13019757a43e269dbdb9df35c95.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32f2d4d1d2c16c54b2caef17840bfcb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad978532f3d62b8d43fa7dcc8a0b54a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2023-03-12 14:04:38
|
相似题推荐
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】在锐角△ABC中,角
的对边分别为
,且
.
(1)求角
的大小;
(2)再从下面条件①、条件②这两个条件中选择一个作为已知,求△ABC的面积.
条件①:
,
;条件②:
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f44f691fcb2ffaadf4ab3a46a23305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79bebac5d5d0e44c39720ecea79e8e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1424eb3eca9492bdeae16ef3f4213663.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)再从下面条件①、条件②这两个条件中选择一个作为已知,求△ABC的面积.
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce76b9090abd10e45aabc0d7ea5f95d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09eebab59213386449a726b75065bf76.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】如图,在四边形
中,
,
,
.
;
(2)若
,
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0d4fb8185a2433ae1111db943e4f7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba03505a2ec6653c4a65830d61694c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12eb393507e4003971d8d501c5ebb249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf91049df0c7a5fb70247c58faa62f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686832406b4b06a8818080885f6e8848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐1】如图所示,在
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f0e9d441797a48b0de52f22803bb74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbdbd3987c237a3bc0588756cff17cf3.png)
的对边分别为a,b,c,已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb994b3013487a9de5aa9d9e0590987d.png)
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/24/e15a852c-5982-44ef-9dff-05eb37c30cbb.png?resizew=163)
(1)求b和
;
(2)如图,设D为AC边上一点,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f0e9d441797a48b0de52f22803bb74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbdbd3987c237a3bc0588756cff17cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb994b3013487a9de5aa9d9e0590987d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/24/e15a852c-5982-44ef-9dff-05eb37c30cbb.png?resizew=163)
(1)求b和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
(2)如图,设D为AC边上一点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f358ec5da9b59d9ac8adfde477d562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐2】设常数
,
,
.
(1)若
是奇函数,求实数
的值;
(2)设
,
中,内角
的对边分别为
.若
,
,
,求
的面积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36b234ba460321e811de1729eadd4b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e32c2584ac9307139ef4252f585d32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d3c28e2fc237e76e757b8a82c619802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783d6adfa8fb1352679c5185258d842a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次