Find the angles which are equal to its complement??????

Dear Student

Let the measure of the required angle be x^o.
We know that, sum of measures of complementary angle pair is 90^o.
Then,
= x + x = 90^o
= 2x = 90^o
= x = 90/2
= x = 45^o
Hence, the required angle measures is 45^o.

Thanks