Question

How would I do this?

Answer 1

well it is a right triangle so you know the angle is 90

all angles in a triangle equal 180 degrees

so you make an equation

28+90+x=180

simplify

118+x=180

-118 -118

x=62 degrees

hope I was helpful

Answer 2

we know that the shaded side is 90 degrees and we are given 28 degrees

So we add 90+28 and we get 118

Since a triangle has 180 degrees, we subtract 180-118 to fins the missing angle measure

180-118=62

x=62

Your equation is 180=90+28+x