如图,在
中,
,
于点
,
为
边上的中线.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/426aeddf-9395-4a18-82bf-90de9416a88a.png?resizew=186)
(1)若
,求
的度数;
(2)若
,
,求点
到
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/426aeddf-9395-4a18-82bf-90de9416a88a.png?resizew=186)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15d7d8b1b15a0dc79d6d482c1cf8889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19dde220bc5d9cbc3ca32e2fc0ddde1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
2024九年级下·江苏·专题练习 查看更多[1]
(已下线)第02讲 解直角三角形(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学下册《知识解读·题型专练》(苏科版)
更新时间:2024-03-11 14:42:15
|
相似题推荐
解答题-证明题
|
较易
(0.85)
【推荐1】如图,在
中,
,
,
是
边上的中线,那么
与
有怎样的数量关系?试证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87fd28b8b2bde9de5630a6106a6f762e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a355958abf7dc0f2eb949584cb87907b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13285b89cefa3dbe140ee32bff9b5621.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/3c52e0aa-0592-4f65-a2ca-d096d8f233fd.png?resizew=198)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
名校
【推荐2】如图,在
中,
于点
,
于点
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/6fa81f1c-d3b9-41d1-ab81-dab120d2cbd7.png?resizew=201)
(1)求证:
是等腰三角形;
(2)若
,
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e68633cbbe3cc2d0801305f81a7aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d320f180419175d75eebc618cc458b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/6fa81f1c-d3b9-41d1-ab81-dab120d2cbd7.png?resizew=201)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eadb6f330e2d5325adb08c2b1d80b1ae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745a7069d2449b2f8885b37071567b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf2732c063f01d83e8f7cfc2b138732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐1】如图,
和
都是等腰直角三角形,
,
,
,连接
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c2425db34d83dbe44f3ee3d2c5439b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b34233772c4c26d6669499d9b1f15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8775dcf60ad143bc59a58b000f374c56.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/9c9d5301-b62d-43d8-ab1d-853e92bd0313.png?resizew=180)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐1】已知:如图,第一象限内的点
在反比例函数的图像上,点
在
轴上,
轴,点
的坐标为
,且
.求:
(2)点
的坐标;
(3)
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2146aec59309d1544ece1d028a17e394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e194aba3710705f9c8c68cbc3e7af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/938f439483e85e1bf6358d2fce2299b8.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐2】如图,在Rt
ABC中,∠BAC=90°,以AB为直径的⊙O交BC于点D,BE垂直于过点D的切线,垂足为点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/50100326-aa76-4661-a59d-faa14c2dde51.png?resizew=180)
(1)证明:BD平分∠ABE;
(2)若CD=
,AC=5,求⊙O的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/50100326-aa76-4661-a59d-faa14c2dde51.png?resizew=180)
(1)证明:BD平分∠ABE;
(2)若CD=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57004675526f4aa38f4e65b0cdd47a52.png)
您最近一年使用:0次