Question

Del Grafico calcular a + betta

Answer 1

Respuesta:

75

Explicación paso a paso:

90 + 30+ @ = 180

@ = 180-120

@ = 60

90+ @ + B+ B = 180

90+ 60+ 2B = 180

2B = 180+150

2B = 30

B= 30/2

B= 15

@+ B = 60+15 = 75