Question

find the missing angle.

Explanation:

Step1: Identify the angle type

The angle is a right angle, so it measures $90^\circ$.

Step2: Calculate the missing angle

Let the missing angle be $x$. We know that $40^\circ + x = 90^\circ$. Solving for $x$, we get $x = 90^\circ - 40^\circ = 50^\circ$.

Answer:

50