已知函数f(x)=1-2sin^2x+2√3sinxcosx,在△ABC中,角A,B,C所对的边分别是a,b,c,且f(A)=1,b+c=3(1)求角A的大小;(2)求a的取值范围
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![已知函数f(x)=1-2sin^2x+2√3sinxcosx,在△ABC中,角A,B,C所对的边分别是a,b,c,且f(A)=1,b+c=3(1)求角A的大小;(2)求a的取值范围](/uploads/image/z/3013930-10-0.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3D1-2sin%5E2x%2B2%E2%88%9A3sinxcosx%2C%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2C%E8%A7%92A%2CB%2CC%E6%89%80%E5%AF%B9%E7%9A%84%E8%BE%B9%E5%88%86%E5%88%AB%E6%98%AFa%2Cb%2Cc%2C%E4%B8%94f%28A%29%3D1%2Cb%2Bc%3D3%EF%BC%881%EF%BC%89%E6%B1%82%E8%A7%92A%E7%9A%84%E5%A4%A7%E5%B0%8F%EF%BC%9B%EF%BC%882%EF%BC%89%E6%B1%82a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4)
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