Answer:
5.76
Step-by-step explanation:
1 second
180=(180-108)+x+(180-4x)
180=72+x+180-3x
180=252-3x
-72=-3x
72=3x
x=24
x = 60°
let the missing angle be = x
Cos x = 8/16
x = Cos-¹ 0.5
im sorry but i know x=6 if that helps