1. The problem states we have a right triangle with angles 90°, 36°, and a missing angle $l$. 2. The sum of angles in any triangle is always $180^\circ$. 3. We can write the equation: $$90^\circ + 36^\circ + l = 180^\circ$$ 4. Simplify the left side: $$126^\circ + l = 180^\circ$$ 5. Subtract $126^\circ$ from both sides to isolate $l$: $$l = 180^\circ - 126^\circ$$ 6. Calculate the value: $$l = 54^\circ$$ Final answer: The missing angle $l$ is $54^\circ$.