Well it would be -5, right? Because you lost (-) $5, you would have a negative five dollars.
It will be 52 as you know when looking at a triangle with 3 angles they must all add up to 180 so you simply do 56+72 then subtract 180 from it and you get 52.
Answer:

Step-by-step explanation:
see the attached figure to better understand the problem
we know that
If AB is tangent to circle O at point A
then
AB is perpendicular to AO (radius) and Triangle ABO is a right triangle
so
----> by complementary angles in a right triangle
substitute the given value

