The image shows a triangle where the angle $z$ is the unknown, and the diagram appears to have a right angle at point $A$, with $z$ representing an angle inside the triangle.

To determine the value of $z$, we'll need the following:

1. The sum of all angles in a triangle is always $180^\circ$.
2. There is a right angle at $A$, so angle $A = 90^\circ$.

If you could provide any additional side lengths or information about the triangle (like the other angles), we could proceed with a more specific calculation.

Would you like to provide those details, or should I move forward based on typical assumptions?