What is the measure of ∠x?

Answer:
We know angle AOC is a right triangle,
therefor
90 - 73 = x
Angle X is 17.
Answer:
x = 17
Step-by-step explanation:
This is a 90 degree angle so it means it is a complementary angle.
73 + x = 90
subtract 73 from both sides
x = 90 - 73
x = 17