已知函数f(x)=sinx•cos(x- π/6)+cos2x-1/2 . (Ⅰ)求函数f(x)的已知函数f(x)=sinx•cos(x-π/6)+cos2x-1/2.(Ⅰ)求函数f(x)的单调递增区间;(Ⅱ)在△ABC中,角A,B,C的对边分别是
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![已知函数f(x)=sinx•cos(x- π/6)+cos2x-1/2 . (Ⅰ)求函数f(x)的已知函数f(x)=sinx•cos(x-π/6)+cos2x-1/2.(Ⅰ)求函数f(x)的单调递增区间;(Ⅱ)在△ABC中,角A,B,C的对边分别是](/uploads/image/z/3794175-63-5.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%3Dsinx%26%238226%3Bcos%EF%BC%88x-+%CF%80%2F6%EF%BC%89%2Bcos2x-1%2F2+%EF%BC%8E+%EF%BC%88%E2%85%A0%EF%BC%89%E6%B1%82%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%E7%9A%84%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%3Dsinx%26%238226%3Bcos%EF%BC%88x-%CF%80%2F6%EF%BC%89%2Bcos2x-1%2F2%EF%BC%8E%EF%BC%88%E2%85%A0%EF%BC%89%E6%B1%82%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%E7%9A%84%E5%8D%95%E8%B0%83%E9%80%92%E5%A2%9E%E5%8C%BA%E9%97%B4%EF%BC%9B%EF%BC%88%E2%85%A1%EF%BC%89%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2C%E8%A7%92A%2CB%2CC%E7%9A%84%E5%AF%B9%E8%BE%B9%E5%88%86%E5%88%AB%E6%98%AF)
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