A right-angled triangle XYZ XYZ\,XYZ is shown. The right angle is at vertex YYY. Side YZ YZ\,YZ is horizontal and labeled 4.5 m. Side XY XY\,XY is vertical. Hypotenuse XZ XZ\,XZ is labeled 10.2 m.
Calculate the size of angle YXZYXZYXZ.
