作业帮怎样把sinxcosx/sin^2xcos^2x化简为tanx/1+tanx?
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怎样把sinxcosx/sin^2xcos^2x化简为tanx/1+tanx?
怎样把sinxcosx/sin^2xcos^2x化简为tanx/1+tanx?
怎样把sinxcosx/sin^2xcos^2x化简为tanx/1+tanx?
原式=1/(sinxcosx)=(sin²x+cos²x)/sinxcosx
此时分子分母同除以cos²x
原式=(tan²x+1)/tanx
是不是哪里有问题?
怎样把sinxcosx/sin^2xcos^2x化简为tanx/1+tanx?
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