Respuesta :

The angles of a triangle will all add up to 180.

48 + 42 = 90.

180 - 90 = 90.
Therefore, x has to be 90 degrees because 90 + 42 + 48 = 180.

Hope this helps!!

khushi28lol
when you add 42+48=90
So then when u add 90+42+43=180 180-90=90
Therefore ur answer is 90degrees