Respuesta :
Answer:
Hello! answer: a = 107
Step-by-step explanation:
This is a supplementary angle meaning it will add up to 180 degrees so...
180 - 73 = 107 therefore a = 107 hope that helps!
Answer:
107
Step-by-step explanation:
The two angles form a straight line so they add to 180 degrees
73+a = 180
Subtract 73 from each side
a = 180-73
a = 107