如图,∠C=90°,点A、B在∠C的两边上,CA=30,CB=20,连接AB.点P从点B出发,以每秒4个单位长度的速度沿BC的方向运动,到点C停止.当点P与B、C两点不重合时,作PD⊥BC交AB于点D,作DE⊥AC于点E.F为射线CB上
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![如图,∠C=90°,点A、B在∠C的两边上,CA=30,CB=20,连接AB.点P从点B出发,以每秒4个单位长度的速度沿BC的方向运动,到点C停止.当点P与B、C两点不重合时,作PD⊥BC交AB于点D,作DE⊥AC于点E.F为射线CB上](/uploads/image/z/8589000-48-0.jpg?t=%E5%A6%82%E5%9B%BE%2C%E2%88%A0C%3D90%C2%B0%2C%E7%82%B9A%E3%80%81B%E5%9C%A8%E2%88%A0C%E7%9A%84%E4%B8%A4%E8%BE%B9%E4%B8%8A%2CCA%3D30%2CCB%3D20%2C%E8%BF%9E%E6%8E%A5AB%EF%BC%8E%E7%82%B9P%E4%BB%8E%E7%82%B9B%E5%87%BA%E5%8F%91%2C%E4%BB%A5%E6%AF%8F%E7%A7%924%E4%B8%AA%E5%8D%95%E4%BD%8D%E9%95%BF%E5%BA%A6%E7%9A%84%E9%80%9F%E5%BA%A6%E6%B2%BFBC%E7%9A%84%E6%96%B9%E5%90%91%E8%BF%90%E5%8A%A8%2C%E5%88%B0%E7%82%B9C%E5%81%9C%E6%AD%A2%EF%BC%8E%E5%BD%93%E7%82%B9P%E4%B8%8EB%E3%80%81C%E4%B8%A4%E7%82%B9%E4%B8%8D%E9%87%8D%E5%90%88%E6%97%B6%2C%E4%BD%9CPD%E2%8A%A5BC%E4%BA%A4AB%E4%BA%8E%E7%82%B9D%2C%E4%BD%9CDE%E2%8A%A5AC%E4%BA%8E%E7%82%B9E%EF%BC%8EF%E4%B8%BA%E5%B0%84%E7%BA%BFCB%E4%B8%8A)
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