在三角形ABC中,角A,B,C的对边分别为a,b,c,若向量AB*向量AC=向量BA*向量BC=11,求证A=B2,求边长c的值3,若|向量AB+向量AC|=根号6,求ABC的面积
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![在三角形ABC中,角A,B,C的对边分别为a,b,c,若向量AB*向量AC=向量BA*向量BC=11,求证A=B2,求边长c的值3,若|向量AB+向量AC|=根号6,求ABC的面积](/uploads/image/z/1603884-12-4.jpg?t=%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2C%E8%A7%92A%2CB%2CC%E7%9A%84%E5%AF%B9%E8%BE%B9%E5%88%86%E5%88%AB%E4%B8%BAa%2Cb%2Cc%2C%E8%8B%A5%E5%90%91%E9%87%8FAB%2A%E5%90%91%E9%87%8FAC%3D%E5%90%91%E9%87%8FBA%2A%E5%90%91%E9%87%8FBC%3D11%2C%E6%B1%82%E8%AF%81A%3DB2%2C%E6%B1%82%E8%BE%B9%E9%95%BFc%E7%9A%84%E5%80%BC3%2C%E8%8B%A5%7C%E5%90%91%E9%87%8FAB%2B%E5%90%91%E9%87%8FAC%7C%3D%E6%A0%B9%E5%8F%B76%2C%E6%B1%82ABC%E7%9A%84%E9%9D%A2%E7%A7%AF)
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