Find 2tan30 / 1 + tan 2 30 =
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2tan30°/(1+tan²30°)
=(2×1/√3)/{1+(1/√3)²}
=(2/√3)/(1+1/3)
=(2/√3)/(4/3)
=2/√3×3/4
=√3/2
=(2×1/√3)/{1+(1/√3)²}
=(2/√3)/(1+1/3)
=(2/√3)/(4/3)
=2/√3×3/4
=√3/2
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