fx=sin(x+π/6)-cosx求f(2π/3)

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fx=sin(x+π/6)-cosx求f(2π/3)
fx=sin(x+π/6)-cosx求f(2π/3)

fx=sin(x+π/6)-cosx求f(2π/3)
答案等于1

1/2+√3/2