Explanation: For this question, we will use the sine rule to get the missing side b. The sine rule is shown in the attached image. We are given that: a = 31 measure angle A = 38° measure angle B = 74°
Substitute in the relation as follows: sinA/a = sinB/b sin(38) / 31 = sin(74) / b b = [sin(74)] / [sin(38) / 31] b = 48.4017