tan^2theta/1+tan^2 theta
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Step-by-step explanation:
tan^2 theta/1+tan^2theta=(sin^2theta/cos^2theta)/1+(sin^2theta/cos^2theta)
=(sin^2theta/cos^2theta)/(cos^2theta+sin^2theta)/cos^2theta
=sin^2theta/1= sin^2theta
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