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The complement of the supplement of 138° is
1. 42° 
2. 48°
3. 38°
4. 90°

1 Answer

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Correct Answer - Option 2 : 48°

Concept:

  • Supplementary angles are two angles whose measures add up to 180°.
  • Complementary angles are two angles whose measures add up to 90°.

Calculation:

Supplement of 138° = 180° - 138° = 42° 

Now, complement of 42° = 90° - 42° = 48° 

Hence, the complement of the supplement of 138° is 48°. 

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