Respuesta :
Complementary angles have a sum of 90°
Supplementary angles have a sum of 180°
So
∠b=90-a=90-38=52°
∠c=180-b=180-52=128°
Supplementary angles have a sum of 180°
So
∠b=90-a=90-38=52°
∠c=180-b=180-52=128°