Question Analysis
The main focus is applying the Tangent - chord theorem. We use the given measure of the intercepted arc to find the measure of the angle .
Key Concept Explanation
Tangent - chord Theorem: The measure of the angle formed by a tangent and a chord is equal to half the measure of the intercepted arc.
Step - by - Step Solution
1. Since intercepts the major arc with a measure of , according to the Tangent - chord theorem.
2. We calculate