Question

please answer this question fast..!!

Answer 1

a:b=2:3
a=2x b=3x
ax+bx=angle POX
ax+bx=180-angle POY (linear pair)
ax+bx=180-90
ax+bx=90
2x+3x=90
5x=90
x=90\5
x=18
b=3x=3×18=54°
b+c=180 (straight line)
54+c=180
c=180-54
c=126°