MathematicsTwo supplementary angles differ by 20°. What are the angles?

Two supplementary angles differ by 20°. What are the angles?


  1. A
    100°, 80°
  2. B
    12°, 168°
  3. C
    13°, 167°
  4. D
    0°, 180° 

    Fill Out the Form for Expert Academic Guidance!l



    +91



    Live ClassesBooksTest SeriesSelf Learning



    Verify OTP Code (required)

    I agree to the terms and conditions and privacy policy.

    Solution:

    Given, two supplementary angles differ by 20°.
    When the sum of a pair of angles is 180 degrees then they are called supplementary angles.
    Let one of the angles be x°.
    So the other angle should be 180-x°.
    According to the question, x-(180-x)=20.
    x-180+x=20
    x = 100
    The other angle is 180-x=180 - 100=80.
    Hence the two angles are 100° and 80°.
    So, option 1 is correct.
     
    Chat on WhatsApp Call Infinity Learn