如图①所示,直线l1:y=3x+3与x轴交于B点,与直线l2交于y轴上一点A,且l2与x轴的交点为C(1,0).(1)求证:∠ABC=∠ACB;(2)如图②所示,过x轴上一点D(-3,0)作DE⊥AC于E,DE交y轴于F点,交AB于G点,求
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![如图①所示,直线l1:y=3x+3与x轴交于B点,与直线l2交于y轴上一点A,且l2与x轴的交点为C(1,0).(1)求证:∠ABC=∠ACB;(2)如图②所示,过x轴上一点D(-3,0)作DE⊥AC于E,DE交y轴于F点,交AB于G点,求](/uploads/image/z/12556792-64-2.jpg?t=%E5%A6%82%E5%9B%BE%E2%91%A0%E6%89%80%E7%A4%BA%2C%E7%9B%B4%E7%BA%BFl1%EF%BC%9Ay%3D3x%2B3%E4%B8%8Ex%E8%BD%B4%E4%BA%A4%E4%BA%8EB%E7%82%B9%2C%E4%B8%8E%E7%9B%B4%E7%BA%BFl2%E4%BA%A4%E4%BA%8Ey%E8%BD%B4%E4%B8%8A%E4%B8%80%E7%82%B9A%2C%E4%B8%94l2%E4%B8%8Ex%E8%BD%B4%E7%9A%84%E4%BA%A4%E7%82%B9%E4%B8%BAC%EF%BC%881%2C0%EF%BC%89%EF%BC%8E%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%81%EF%BC%9A%E2%88%A0ABC%3D%E2%88%A0ACB%EF%BC%9B%EF%BC%882%EF%BC%89%E5%A6%82%E5%9B%BE%E2%91%A1%E6%89%80%E7%A4%BA%2C%E8%BF%87x%E8%BD%B4%E4%B8%8A%E4%B8%80%E7%82%B9D%EF%BC%88-3%2C0%EF%BC%89%E4%BD%9CDE%E2%8A%A5AC%E4%BA%8EE%2CDE%E4%BA%A4y%E8%BD%B4%E4%BA%8EF%E7%82%B9%2C%E4%BA%A4AB%E4%BA%8EG%E7%82%B9%2C%E6%B1%82)
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