What are the measures of ∠a, ∠b, ∠c and ∠d? Explain how to find each of the angles. measure
please need help asap

Answer:
a=90° (given)
b=180°-90°-59° (angles on a straight line)
c=180°-59° (angles on a straight line)
d=59° (vertically opposite angles)
Step-by-step explanation:
I said the answer already