如图,圆D经过坐标原点O且与x轴交于点A,DC⊥x轴于点C,且与圆D交于点B.已知圆O的半径为2CM,∠ODC=60°.1、B点坐标.2、经过0,B,A三点的抛物线的解析式.3、在抛物线上是否存在一点P,使△PAO和△OBA相
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![如图,圆D经过坐标原点O且与x轴交于点A,DC⊥x轴于点C,且与圆D交于点B.已知圆O的半径为2CM,∠ODC=60°.1、B点坐标.2、经过0,B,A三点的抛物线的解析式.3、在抛物线上是否存在一点P,使△PAO和△OBA相](/uploads/image/z/8840341-37-1.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%86D%E7%BB%8F%E8%BF%87%E5%9D%90%E6%A0%87%E5%8E%9F%E7%82%B9O%E4%B8%94%E4%B8%8Ex%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9A%2CDC%E2%8A%A5x%E8%BD%B4%E4%BA%8E%E7%82%B9C%2C%E4%B8%94%E4%B8%8E%E5%9C%86D%E4%BA%A4%E4%BA%8E%E7%82%B9B.%E5%B7%B2%E7%9F%A5%E5%9C%86O%E7%9A%84%E5%8D%8A%E5%BE%84%E4%B8%BA2CM%2C%E2%88%A0ODC%EF%BC%9D60%C2%B0.1%E3%80%81B%E7%82%B9%E5%9D%90%E6%A0%87.2%E3%80%81%E7%BB%8F%E8%BF%870%2CB%2CA%E4%B8%89%E7%82%B9%E7%9A%84%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F.3%E3%80%81%E5%9C%A8%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8A%E6%98%AF%E5%90%A6%E5%AD%98%E5%9C%A8%E4%B8%80%E7%82%B9P%2C%E4%BD%BF%E2%96%B3PAO%E5%92%8C%E2%96%B3OBA%E7%9B%B8)
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