Respuesta :

nikki2freeman

well complementary angles are 90 and 90, so this means that we have to equal 90 degrees.

39+x=90

90-39= 51

x= 51

Supernova

Complementary angles add up to 90 degrees.

Subtract 39 from 90.

90 - 39 = 51

The complement of a 39 degree angle is 51 degrees.