Răspuns :
x-unghiul
complementul sau: 90-x
x=2* (90-x)
=> x=180-2*x
=> 3*x=280
=> x=60 °
___________
complementul sau: 90-x
x=2* (90-x)
=> x=180-2*x
=> 3*x=280
=> x=60 °
___________
primul unghi=x
al doilea unghi y=2x
x+2x=90°
3x=90°
x=90°÷x=30°
y=2x
y=2·30°
y=60°
al doilea unghi y=2x
x+2x=90°
3x=90°
x=90°÷x=30°
y=2x
y=2·30°
y=60°