Correct Answer: B
Explanation:
In order to solve this problem, we need to break down each word.
We need to first find the complement of 81°
The complement is
90 = x + y
Since we are given an angle of 81° we can substitute it for x, and solve for y.
90 = y + 81
y = 9
Now since we need to find the supplement of the answer, we just got.
The supplement is
180 = x + y
Now we simply substitute the answer we just got for x.
180 = y + 9
y = 171
So the answer is 171°.