如图,大圆O的半径是小圆O1的直径,且OC垂直于圆O的直径AB,圆O1的切线AD交OC的延长线于点E,切点为D.已知圆O1的半径为r,求DE的长.图
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 19:55:57
![如图,大圆O的半径是小圆O1的直径,且OC垂直于圆O的直径AB,圆O1的切线AD交OC的延长线于点E,切点为D.已知圆O1的半径为r,求DE的长.图](/uploads/image/z/10337245-61-5.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%A4%A7%E5%9C%86O%E7%9A%84%E5%8D%8A%E5%BE%84%E6%98%AF%E5%B0%8F%E5%9C%86O1%E7%9A%84%E7%9B%B4%E5%BE%84%2C%E4%B8%94OC%E5%9E%82%E7%9B%B4%E4%BA%8E%E5%9C%86O%E7%9A%84%E7%9B%B4%E5%BE%84AB%2C%E5%9C%86O1%E7%9A%84%E5%88%87%E7%BA%BFAD%E4%BA%A4OC%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8E%E7%82%B9E%2C%E5%88%87%E7%82%B9%E4%B8%BAD.%E5%B7%B2%E7%9F%A5%E5%9C%86O1%E7%9A%84%E5%8D%8A%E5%BE%84%E4%B8%BAr%2C%E6%B1%82DE%E7%9A%84%E9%95%BF.%E5%9B%BE)
xRmOP+
JŬ$maL
!ql2zv%A><99fK]7o/e] b 맀nk]۩QNzHd\Y;vĿ
6. U2 8mQZMzǎ6uF>~)xeqlH~vP"_(勳rBGy(NS/QNI(+i*fDaͤu9>hOY)D⑥[zDz92iN!RuA`4x\+[yK2brK#O\*L"L-D.~ŮW=^w
NA[>~<j`5QDj,פ