UPSKILL MATH PLUS

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Choose the correct option and justify your choice:
 
1. \(\frac{2 \ tan \ 30^{\circ}}{1 + tan^2 \ 30^{\circ}} =\)
 
2. \(\frac{1 - tan^2 \ 45^{\circ}}{1 + tan^2 \ 45^{\circ}} =\)