Mathematics
Grade9
Easy

Question

The measure of the complement of the angle 30° is?

  1. 30°    
  2. 16°    
  3. 60°    
  4. 160°    

hintHint:

If the sum of the measures of two angles is 90 degrees , the angles are called complementary angles.

The correct answer is: 60°


    If the sum of the measures of two angles is 90 degrees , the angles are called complementary angles.
    Let x be the measure of the complement of the angle 30° .
    the x + 30° = 90°
    x = 90° – 30° = 60°.
    Therefore, The measure of the complement of the angle 30° is 60°.

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