<h3>hope it would be helpful </h3>
X=20
y=60
z=40
I guess this is true
Answer:
option a 75°
Step-by-step explanation:
45°+60°+third angle=180°[by angle sum property]
105°+third angle=180°
third angle =180°-105°
third angle=75°
The mean (or average) for the data set is 67.428
