Respuesta :

I'm not sure what side is missing but you could use the proportions

A/B=X/Y or B/C=Y/Z or CA/=ZX. it also works if you reverse this for example B/A=Y/X

azdelana909

Answer:

x=70º

Step-by-step explanation:

Triangle ABC, A/C=50º, B/C=40º

40º+50º=90º

Triangle XZY, Y/Z=20, Y/X=x

Since it is a right triangle it will add up to 90º.

So 90º-20=70

The missing angle x is 70

x= 70