MCQ
Which of the following pairs of angles are complementary?
- ✓$25^\circ , 65^\circ$
- B$32.1^\circ , 47.9^\circ$
- C$70^\circ , 110^\circ$
- D$30^\circ , 70^\circ$
✓
Answer
Correct option: A.
$25^\circ , 65^\circ$
Complementary angles always add up to $90^\circ$
$25^\circ + 65^\circ = 90^\circ$
Therefore this is the right option (by substitution).
$25^\circ + 65^\circ = 90^\circ$
Therefore this is the right option (by substitution).
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