Respuesta :

It tells us that angle 3 is a right angle(90 degrees) and it also tells us that angles 1 and 2 are congruent therefore you would take 180-90=90/2=45 so the answer would be 45. Hope this helps:)

Answer:

42°

Step-by-step explanation:

Bottom of Ray = 180

1=2

180-90=90

90/2=45