Answer:
25°
Step-by-step explanation:
The intersection angle = 93 degrees. It can be found by adding the large arc (161) + the small arc (unknown) and dividing the sum by 2.
So lets be a little formal here.
Arc BC = 161
x = 93
Arc AD = ?
x = (Arc AD + Arc(BC))/2
93 = (ArcAD + 161) / 2 Multiply both sides by 2
93*2 = (arc AD + 161
186 = arc AD + 161 Subtract 161 from both sides
186 - 161 = arc AD
25 = arc AD
