Răspuns :
Răspuns:
a) x = 8(180° - x)
x = 1440° - 8x
9x = 1440°
x = 160°
b) 2x = 90° - x + 30°
3x = 120°
x = 40°
c)
a + b = 90°
a - b = 24°
___________ +
2a / = 114° => a = 57° => b = 33°
d) (90° - x) = (180° - x)/3
270° - 3x = 180° - x
2x = 90° => x = 45°
Răspuns:
a) x+8x=180
9x=180
Masura unghiului=160grade
b) 2x=90-x+30
3x=120
X=40
c) x+x+24grade=90 grade
2x=66grade
x=33grade
y=x+24grade=57grade
d) (90-x)la puterea 3=180-x=270-3x=180-x=-2x=90=x=45