Question

In the figure, O is the centre of the circle ∠A = 60°.
a) ∠BOD = __________
b) ∠C = _________
needs explanation

Answer 1

Answer:

a)120

b)60

Step-by-step explanation:

the angle subtended at the centre is twice the angle on the circumference. hence angle BOD =2(angle BAD)

OBCD is a cyclic quadrilateral. hence the sum of angle BOD and ANgle BCD is 18p. hence angle C is 60