Question

срочно (30 балов) !!

Answer 1

Объяснение:

$2sin(60)*tg(60)=2*\frac{\sqrt{3} }{2} *\sqrt{3}=3\\\\tg^2(45)+cos(60)=1^2+\frac{1}{2} =1+0.5=1.5\\\\tg(30)*cos(30)=\frac{\sqrt{3} }{3} *\frac{\sqrt{3} }{2} =\frac{3}{6}=\frac{1}{2}=0.5 \\\\\sqrt{2} (sin(45)+cos(45))=\sqrt{2} (\frac{\sqrt{2} }{2} +\frac{\sqrt{2} }{2})=\sqrt{2}*\sqrt{2}=2$

Ответ:

1-В

2-А

3-Г

4-Б