Question

in the given figure find x,y and z.

Answer 1

let a=63° then my answer is:
y=2×a=126°
x+y+z=180°
so x+z=154 and x and z are equal since its angle opposite to radius so 2x=154, x=77=z

Answer 2

x = 27°
y = 126°
z = 27°