Find the measure of angle B in triangle ABC below.Explain

Answer:
B ≈ 76°
Step-by-step explanation:
∆ABC is a right triangle
Reference angle = B
AC = 8 units = Opposite
BC = 4 units = Adjacent
Thus, apply TOA:
Tan B = Opp/Adj
Tan B = 8/2
Tan B = 4
B = Tan^{-1}(4)
B ≈ 76°