在三角形ABC中,AD⊥BC,垂足为D,且BD:DC:AD=2:3:6 (1)求角BAC的大小 (2)设E为AB的中点...在三角形ABC中,AD⊥BC,垂足为D,且BD:DC:AD=2:3:6(1)求角BAC的大小(2)设E为AB的中点,已知三角
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![在三角形ABC中,AD⊥BC,垂足为D,且BD:DC:AD=2:3:6 (1)求角BAC的大小 (2)设E为AB的中点...在三角形ABC中,AD⊥BC,垂足为D,且BD:DC:AD=2:3:6(1)求角BAC的大小(2)设E为AB的中点,已知三角](/uploads/image/z/1646709-69-9.jpg?t=%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2CAD%E2%8A%A5BC%2C%E5%9E%82%E8%B6%B3%E4%B8%BAD%2C%E4%B8%94BD%EF%BC%9ADC%EF%BC%9AAD%EF%BC%9D2%EF%BC%9A3%EF%BC%9A6+%EF%BC%881%EF%BC%89%E6%B1%82%E8%A7%92BAC%E7%9A%84%E5%A4%A7%E5%B0%8F+%EF%BC%882%EF%BC%89%E8%AE%BEE%E4%B8%BAAB%E7%9A%84%E4%B8%AD%E7%82%B9...%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2CAD%E2%8A%A5BC%2C%E5%9E%82%E8%B6%B3%E4%B8%BAD%2C%E4%B8%94BD%EF%BC%9ADC%EF%BC%9AAD%EF%BC%9D2%EF%BC%9A3%EF%BC%9A6%EF%BC%881%EF%BC%89%E6%B1%82%E8%A7%92BAC%E7%9A%84%E5%A4%A7%E5%B0%8F%EF%BC%882%EF%BC%89%E8%AE%BEE%E4%B8%BAAB%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E5%B7%B2%E7%9F%A5%E4%B8%89%E8%A7%92)
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