Question

in the figure xy is the diameter ofthe circle and angle y=40.find the measure of angle x and angle y.​

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