Final answer:
Angle 2 is equal to 51°.
Step-by-step explanation:
Angle 1 and Angle 2 are complementary angles when their sum is equal to 90 degrees. In this case, Angle 4 is given as 39 degrees. Since Angle 1 and Angle 2 are complementary, Angle 1 + Angle 2 = 90. We can write this as:
Angle 1 + 39° = 90°
Subtracting 39 from both sides:
Angle 1 = 90 - 39 = 51°
Therefore, Angle 2 is equal to 51°.