In the given figure, O is the centre of the circle. If ∠AOB = 90°, find m ∠APB.
A130°
B150°
C135°
DCan't be determined
In the given figure, O is the centre of the circle. If ∠AOB = 90°, find m ∠APB.
A130°
B150°
C135°
DCan't be determined