c. ∡YAC=69.5°
Answer:
solution given:
arc m BY=41°
it is a central angle,
its inscribed angle is half of its=41/2=20.5°
we know that
tangent in the circle is perpendicular to the center,so
∡BAC=90°
∡BAY+∡YAC=90°
20.5°+∡YAC=90°
∡YAC=90°-20.5°
∡YAC=69.5°
Explanation: