help math pls pls pls pls

Answer:
13 degrees.
Step-by-step explanation:
Subtract 60 from 73.
Answer:
73 = 60 + x
Step-by-step explanation:
73 = 60 + x
subtract 60 from both sides
x = 13
I'm assuming 73 is the measurement of the whole thing, because if its 60 the x would be -13