Question

7. In the given figure, O is the centre of the circle and angle BAC= 40°, find angle OBC.

a) 40°

b) 50°
c) 80°
d) 20°​

Answer 1

Answer:

We know, the angle subtended by an arc of a circle at the centre is double the angle subtended by it at any point on the remaining part of the circle

Hence,In given circle,

∠POR=2∠PQR

Therefore ∠POR=2×40

o

=80

o