Answer:
A. 50
Step-by-step explanation:
Sum of interior angles of a triangle is always =180 °
Since this is a right triangle, therefore we know that one angle of the triangle measures 90°
Therefor sum of other two angles has to be =[tex]180\°-90\°=90\°[/tex]
One angle measures = 40°
Therefore the missing angle [tex]y=90\°-40\°=50\°[/tex]
[tex]y=50\°[/tex]
