Question

if angle ABC = xyz and < a = 30 degree , < b = 70 degree then z = to​

Answer 1

<a=<x=30°

<b=<y=70°

<c=<z=?

<x+<y+<z=180° (Angle sum property of a ∆)

30+70+z=180°

100+z=180

z=180-100

z=80°