Answer:
m∠AZB = 129°
Step-by-step explanation:
From the figure attached,
m∠AZB = m∠AZC + m∠CZB
It's given that measure of angle AZC = 90°
And measure of ∠CZB = 39°
Therefore, m∠AZB = 90° + 39°
= 129°
