如图,圆B切y轴于原点O,过定点A(-2√3 ,0)作圆B的切线交圆于点P,已知tan∠PAB=√3/3 ,抛物线C经过A、P两点(1)求圆B的半径.(2)若抛物线C经过点B,求其解析式.(3)设抛物线C交y轴于点M,若三角形APM为直角
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![如图,圆B切y轴于原点O,过定点A(-2√3 ,0)作圆B的切线交圆于点P,已知tan∠PAB=√3/3 ,抛物线C经过A、P两点(1)求圆B的半径.(2)若抛物线C经过点B,求其解析式.(3)设抛物线C交y轴于点M,若三角形APM为直角](/uploads/image/z/3753933-69-3.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%86B%E5%88%87y%E8%BD%B4%E4%BA%8E%E5%8E%9F%E7%82%B9O%2C%E8%BF%87%E5%AE%9A%E7%82%B9A%28-2%E2%88%9A3+%2C0%29%E4%BD%9C%E5%9C%86B%E7%9A%84%E5%88%87%E7%BA%BF%E4%BA%A4%E5%9C%86%E4%BA%8E%E7%82%B9P%2C%E5%B7%B2%E7%9F%A5tan%E2%88%A0PAB%3D%E2%88%9A3%2F3+%2C%E6%8A%9B%E7%89%A9%E7%BA%BFC%E7%BB%8F%E8%BF%87A%E3%80%81P%E4%B8%A4%E7%82%B9%281%29%E6%B1%82%E5%9C%86B%E7%9A%84%E5%8D%8A%E5%BE%84.%282%29%E8%8B%A5%E6%8A%9B%E7%89%A9%E7%BA%BFC%E7%BB%8F%E8%BF%87%E7%82%B9B%2C%E6%B1%82%E5%85%B6%E8%A7%A3%E6%9E%90%E5%BC%8F.%283%29%E8%AE%BE%E6%8A%9B%E7%89%A9%E7%BA%BFC%E4%BA%A4y%E8%BD%B4%E4%BA%8E%E7%82%B9M%2C%E8%8B%A5%E4%B8%89%E8%A7%92%E5%BD%A2APM%E4%B8%BA%E7%9B%B4%E8%A7%92)
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