Answer:
option B. 11°
Step-by-step explanation:
In the given circle m∠CDA = 11° and we have to calculate the measure of ∠CBA.
We should always remember that inscribed angles subtended by same arc are equal.
In the given circle ∠CDA and ∠CBA are on the same arc CA. Therefore, these two angle will measure the same.
∠CDA = ∠CBA = 11°
Therefore, option B 11° is the answer.
