如图,AC是圆O的直径,AB=AC,BC交圆O于点D,AB交圆O于点E,过点D作DG⊥AB,垂足为G(1)求证:BD=CD(2)求证:DG为圆O的切线
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/06 11:15:12
xVoOF*R%PNKɶ6Y4iҬ@]ibeB@G$WswRMVols<{~svhͣ
Ecpw|t/EK{F&ڰy1%2n!d&Uq%~swwq[G+6#Ұw16 eP+n
gf^|uSB]*>NdR+WeV/vVr1/W2H+i-+zS%1H%Yrb%3[J[.dSθrzVdEٝY{N]'LɞK~R(2;GkKV:#}%u\frvdf%5E9XTz;>GOkAp jlH0/|C^3`h>~ZQT:D:wfJkm]q_[;^=!>YAFvVk{/j'j4|
n4ʼnW[1wۣ#cNg1g3mvn4%D$K`>M1ؿΆ3 YUZu㮁[+E
C%a(2
"6x0J&q;_uo|(XX)+^#_Q8#`tb1?/JКj6њLg,!p6UASJLXR:!jΰhhHs?SړS&Կ_rBءQ'w@$F* ?& FĊaRtUԝwg.".-zDc