The top one, hope this is right :)
Answer:
None
Step-by-step explanation:
None of these, but
so if 64 is an option than that's the correct option

Answer:
10.5
Step-by-step explanation:
Set up and solve an equation:
3(90-x) = (180-x). Then 270 - 3x = 180 - x, or 270 - 180 = 2x.
90 = 2x, so x = 45 deg.
Is this true? 3(90-45) = (180-45)? If so, x = 45 degrees is correct.