Final answer:
Unable to provide a definitive solution due to the lack of a clear geometric scenario or a diagram. More information is needed to apply geometric properties accurately.
Step-by-step explanation:
The question appears to be related to finding the value of an angle in a geometry problem involving a tangent line. However, the details given do not correspond to a clear geometric scenario that would allow us to solve for the value of 'x'.
The student may be referring to a circle with a tangent line AB, where angle-related properties of a circle could help determine the value of 'x'. In such problems, one often uses the fact that a radius drawn to a point of tangency is perpendicular to the tangent line, creating a 90-degree angle at the point of tangency.
Additionally, other circle theorems might be useful, such as the angle between a tangent and a chord equaling half the measure of the enclosed arc. Unfortunately, without a specific diagram or more details, we cannot provide a definitive solution.