[問題]幾何題37
由 tangpakchiu 於 星期六 七月 29, 2006 3:11 pm
#ed_op#DIV#ed_cl##ed_op#IMG alt="image file name: 2k470bf5f8dd.gif" src="http://yll.loxa.edu.tw/phpBB2/richedit/upload/2k470bf5f8dd.gif" border=0#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face=新細明體#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#△#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US#ed_cl#ABC#ed_op#/SPAN#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#頂點分別在☉#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US#ed_cl#O1,#ed_op#/SPAN#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#☉#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US#ed_cl#O2#ed_op#/SPAN#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#上,兩圓交於#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US#ed_cl#D#ed_op#/SPAN#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#和#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US#ed_cl#E#ed_op#/SPAN#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#兩點,#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US#ed_cl#EC#ed_op#/SPAN#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#為☉#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US#ed_cl#O2#ed_op#/SPAN#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#直徑,#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US#ed_cl#AC#ed_op#/SPAN#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#過#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US#ed_cl#E#ed_op#/SPAN#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#點,#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US#ed_cl#BC#ed_op#/SPAN#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#過#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US#ed_cl#D#ed_op#/SPAN#ed_cl##ed_op#SPAN style="mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"#ed_cl#點,AE=DC,若EC=12cm,BD=30cm,求arcAD的長。#ed_op#/SPAN#ed_cl##ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl#