若锐角A满足tanA+1/(tanA)=3,则tan^2A+1/(tan^2A)=?

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若锐角A满足tanA+1/(tanA)=3,则tan^2A+1/(tan^2A)=?
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若锐角A满足tanA+1/(tanA)=3,则tan^2A+1/(tan^2A)=?
若锐角A满足tanA+1/(tanA)=3,则tan^2A+1/(tan^2A)=?

若锐角A满足tanA+1/(tanA)=3,则tan^2A+1/(tan^2A)=?