Answer:
40° and 50°
Explanation:
Sum the parts of the ratio, 4 + 5 = 9 parts
Complementary angle sum to 90°
Divide 90° by 9 to find the value of one part of the ratio
90 ÷ 9 = 10° ← value of 1 part, thus
4 parts = 4 × 10° = 40°
5 parts = 5 × 10° = 50°
The angles are 40° and 50°