在△ABC中,角A,B,C所对的边分别是a,b,c,λc=2acosB(λ∈R)若B=60°,2b²=3ac,求λ的值
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![在△ABC中,角A,B,C所对的边分别是a,b,c,λc=2acosB(λ∈R)若B=60°,2b²=3ac,求λ的值](/uploads/image/z/13143921-33-1.jpg?t=%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%CE%BBc%3D2acosB%28%CE%BB%E2%88%88R%29%E8%8B%A5B%3D60%C2%B0%2C2b%26%23178%3B%3D3ac%2C%E6%B1%82%CE%BB%E7%9A%84%E5%80%BC)
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