圆O的直径为5,在圆O上位于直径AB的异侧有定点C和动点P,已知BC:CA=4:3,点P在半圆弧AB上运动(不与A、B两点重合),过点C作CP的垂线CD交PB的延长线于D点,(1)当P运动到AB弧中点时,求CD的长.(2)当
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![圆O的直径为5,在圆O上位于直径AB的异侧有定点C和动点P,已知BC:CA=4:3,点P在半圆弧AB上运动(不与A、B两点重合),过点C作CP的垂线CD交PB的延长线于D点,(1)当P运动到AB弧中点时,求CD的长.(2)当](/uploads/image/z/12207333-21-3.jpg?t=%E5%9C%86O%E7%9A%84%E7%9B%B4%E5%BE%84%E4%B8%BA5%2C%E5%9C%A8%E5%9C%86O%E4%B8%8A%E4%BD%8D%E4%BA%8E%E7%9B%B4%E5%BE%84AB%E7%9A%84%E5%BC%82%E4%BE%A7%E6%9C%89%E5%AE%9A%E7%82%B9C%E5%92%8C%E5%8A%A8%E7%82%B9P%2C%E5%B7%B2%E7%9F%A5BC%3ACA%3D4%3A3%2C%E7%82%B9P%E5%9C%A8%E5%8D%8A%E5%9C%86%E5%BC%A7AB%E4%B8%8A%E8%BF%90%E5%8A%A8%EF%BC%88%E4%B8%8D%E4%B8%8EA%E3%80%81B%E4%B8%A4%E7%82%B9%E9%87%8D%E5%90%88%EF%BC%89%2C%E8%BF%87%E7%82%B9C%E4%BD%9CCP%E7%9A%84%E5%9E%82%E7%BA%BFCD%E4%BA%A4PB%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8ED%E7%82%B9%2C%EF%BC%881%EF%BC%89%E5%BD%93P%E8%BF%90%E5%8A%A8%E5%88%B0AB%E5%BC%A7%E4%B8%AD%E7%82%B9%E6%97%B6%2C%E6%B1%82CD%E7%9A%84%E9%95%BF.%EF%BC%882%EF%BC%89%E5%BD%93)
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