Well there is no question that i can see so if this is a riddle then it is already properly solved due to no question at all
Answer:
B
Step-by-step explanation:
substitute
6+4=10
12-3=9
4-9=-5
With no given information, we're not sure that it actually is.
We don't even know for sure whether the two angles are
even on the same planet.
Answer:
15.6204994
Step-by-step explanation:

hope this helps!