The correct option is
C 30∘,150∘![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/29491/content_1.jpg)
In
ΔOAB,
AB = OA = OB = radius ∴ΔOAB is an equilateral triangle.
Therefore, each interior angle of this triangle will be of
60∘.
⇒∠AOB=60∘.
∠ACB=12∠AOB =12(60∘)=30∘ In cyclic quadrilateral ACBD, ∠ACB+∠ADB=180∘ (Opposite angle in cyclic quadrilateral are supplementary)
∴∠ADB=180∘−30∘=150∘ Therefore, angle subtended by this chord at a point on the major arc and the minor arc are
30∘ and
150∘ respectively.