Question

Tg2 pi/4•sin pi/3•tg2pi/3

Answer 1

$tg^2 frac{pi}{4} cdot sinfrac{pi}{3} cdot tgfrac{2pi }{3} =1^2cdot frac{sqrt3}{2}cdot tg(pi -frac{pi}{3})=frac{sqrt3}{2}cdot (-tgfrac{pi}{3})=\\=frac{sqrt3}{2}cdot (-sqrt3)=-frac{3}{2}=-1,5$