如图,在直角梯形ABCD中,AB∥DC,∠D=90°,AC⊥BC,AB=10cm,BC=8cm,F点以每秒2cm的速度在线段AB上由A向B匀速运动,E点同时以每秒1cm的速度在线段BC上由B向C匀速运动,设运动时间为t秒(0<t<5).(1)求证
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![如图,在直角梯形ABCD中,AB∥DC,∠D=90°,AC⊥BC,AB=10cm,BC=8cm,F点以每秒2cm的速度在线段AB上由A向B匀速运动,E点同时以每秒1cm的速度在线段BC上由B向C匀速运动,设运动时间为t秒(0<t<5).(1)求证](/uploads/image/z/3486265-25-5.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E7%9B%B4%E8%A7%92%E6%A2%AF%E5%BD%A2ABCD%E4%B8%AD%2CAB%E2%88%A5DC%2C%E2%88%A0D%3D90%C2%B0%2CAC%E2%8A%A5BC%2CAB%3D10cm%2CBC%3D8cm%2CF%E7%82%B9%E4%BB%A5%E6%AF%8F%E7%A7%922cm%E7%9A%84%E9%80%9F%E5%BA%A6%E5%9C%A8%E7%BA%BF%E6%AE%B5AB%E4%B8%8A%E7%94%B1A%E5%90%91B%E5%8C%80%E9%80%9F%E8%BF%90%E5%8A%A8%2CE%E7%82%B9%E5%90%8C%E6%97%B6%E4%BB%A5%E6%AF%8F%E7%A7%921cm%E7%9A%84%E9%80%9F%E5%BA%A6%E5%9C%A8%E7%BA%BF%E6%AE%B5BC%E4%B8%8A%E7%94%B1B%E5%90%91C%E5%8C%80%E9%80%9F%E8%BF%90%E5%8A%A8%2C%E8%AE%BE%E8%BF%90%E5%8A%A8%E6%97%B6%E9%97%B4%E4%B8%BAt%E7%A7%92%EF%BC%880%EF%BC%9Ct%EF%BC%9C5%EF%BC%89%EF%BC%8E%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%81)
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