Two complementary angles are in the ratio 4 : 5. Find the angles.
Answer :
Let the two angles be 4x and 5x, respectively.
Then, 4x + 5x = 90
9x = 90
X = 10°
Hence, the two angles are
4x = 4 x 10° = 40° and 5x = 5 x 10° = 50°.