Solution :
Given the equation :




n = 9



Therefore the vertex form of
is
.
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
Answer:
B
Step-by-step explanation: