Answer:
31
Step-by-step explanation:
When two angles are complementary, their angle measures add up to 90 degrees. Therefore:
a+b=90
59+b=90
b=90-59=31 degrees
Hope this helps!
∠a = 31°
∠a+∠b=90°
∠a+59°=90°
Subtract 59° from both sides
∠a=31°
