已知cos(π+α)=-3/5,3π/2

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已知cos(π+α)=-3/5,3π/2已知cos(π+α)=-3/5,3π/2已知cos(π+α)=-3/5,3π/2cos(π+α)=-3/5,3π/2

已知cos(π+α)=-3/5,3π/2
已知cos(π+α)=-3/5,3π/2

已知cos(π+α)=-3/5,3π/2
cos(π+α)=-3/5,3π/2