数学三角函数填空题1.\x05tanA=0.25,则cos2A+（sinA）平方=___________2.\x05tan(A+B+π/6)=0.5,tan(B-π/6)=-1/3,则tan(A+π/3)=__________3.\x05(1+cosA)/sinA=2,则sinA-cosA=____________4.\x05cosA=4/5,tan(A-B)=-1/3,则cosB=__________5.\x05sinA

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