Complementary angles are two angles whose measures add up to 90 degrees.
Let's check the pairs:
-
73° and 34°
- \(73 + 34 = 107°\) (not complementary)
-
120° and 17°
- \(120 + 17 = 137°\) (not complementary)
-
17° and 73°
- \(17 + 73 = 90°\) (complementary)
-
120° and 90°
- \(120 + 90 = 210°\) (not complementary)
The angles that are complementary are 17° and 73°.