Question

Marking Scheme: +3,0
In the given figure, O is the centre of the circle and angleBAC = n°, angleOCB = m, then:
B
(A) m + n = 90°
(B) m + n = 180°
(C) m + n = 120°
(D) m + n = 150°​

Answer 1

Answer:

please give me your chapter

Answer 2

Answer:

please attach diagram of the question