在三角形ABC中,a,b,c分别是角A,B,C的对边.且满足cosA×(根号3sinA-cosA)=1/2.求A的大小.若a=2倍根号2,S三角形ABC=2倍根号3,求b,c的长
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![在三角形ABC中,a,b,c分别是角A,B,C的对边.且满足cosA×(根号3sinA-cosA)=1/2.求A的大小.若a=2倍根号2,S三角形ABC=2倍根号3,求b,c的长](/uploads/image/z/10755469-37-9.jpg?t=%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2Ca%2Cb%2Cc%E5%88%86%E5%88%AB%E6%98%AF%E8%A7%92A%2CB%2CC%E7%9A%84%E5%AF%B9%E8%BE%B9.%E4%B8%94%E6%BB%A1%E8%B6%B3cosA%C3%97%28%E6%A0%B9%E5%8F%B73sinA-cosA%29%3D1%2F2.%E6%B1%82A%E7%9A%84%E5%A4%A7%E5%B0%8F.%E8%8B%A5a%3D2%E5%80%8D%E6%A0%B9%E5%8F%B72%2CS%E4%B8%89%E8%A7%92%E5%BD%A2ABC%3D2%E5%80%8D%E6%A0%B9%E5%8F%B73%2C%E6%B1%82b%2Cc%E7%9A%84%E9%95%BF)
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