Answers

1. Answer:

   The angles are 23° , 67°.

   Step-by-step explanation:

   Complementary angles:

         If sum of two angles is 90°, then they are called complementary angles.

   Let one angle be ‘x’.

   Its complement = 2*x + 21 = 2x + 21

   x + 2x + 21 = 90°

        3x  + 21 = 90

   Subtract 21 from both sides,

                 3x = 90 – 21

                 3x = 69

   Divide both sides by  3,

                    x = 69/3

                    x = 23°

   Its complement = 2*23 + 21

                             = 46 + 21

                             = 67°

   Two complementary angles are 67° and 23°.

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