Answer:
75 degrees
Step-by-step explanation:
law of sinus :
a/sin(A) = b/sin(B) = c/sin(C)
where the sides are always opposite to the used angles.
so,
28/sin(90) = 27/sin(angle)
28/1 = 28 = 27/sin(angle)
28×sin(angle) = 27
sin(angle) = 27/28 ≈ 0.96
angle ≈ 75 degrees
