Question

Помогите пожалуйста

Answer 1

$tg45^circ +left (dfrac{2cdot sin30^circ -frac{cos45^circ }{sqrt2}}{frac{sin60^circ }{sqrt3}+4cdot cos60^circ }right)=1+dfrac{2cdot frac{1}{2}-frac{sqrt2/2}{sqrt2}}{frac{sqrt3/2}{sqrt3}+4cdot frac{1}{2}}=\\\=1+dfrac{1-frac{1}{2}}{frac{1}{2}+2}=1+dfrac{frac{1}{2}}{frac{5}{2}}=1+dfrac{1}{5}=dfrac{6}{5}=1,2$