數學題目 - 推理遊戲
By Damian
at 2007-05-10T18:16
at 2007-05-10T18:16
Table of Contents
一個25m深水井,
| |
d| |
| |a
| e |
| |
b一一一c
斜放了兩個長度為20m(cd相連線段)和15m(ab相連線段)的梯子
若此兩個梯子在e的地方交叉
已知e點距離井口17m
求此井的寬度(bc線段長), 以及角aed的大小
--
| |
d| |
| |a
| e |
| |
b一一一c
斜放了兩個長度為20m(cd相連線段)和15m(ab相連線段)的梯子
若此兩個梯子在e的地方交叉
已知e點距離井口17m
求此井的寬度(bc線段長), 以及角aed的大小
--
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推理遊戲
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