29 sama 30 aja please.

30.1/5×90=18°(A)
semoga membantu...

29. diketahui : x = y
: y + 5x = 180° ( karna berpelurus)

maka, y+5x= 180°
x+5x = 180°
6x = 180
x = 30°
x=y
y= 30°

x+y = 30+30 = 60°