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分針每分鐘走6°,時針每分鐘走0.5° 計算它們的差即可,但要注意二者走的起點不同. 即6X=120+0.5X X=120/5.5 X=240/11分鐘 經過240/11分鐘後,分針與時針重合 所以分針轉了240/11*6=1440/11度 =130又11分之10度
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