Q. 14 A54.6( 5 Votes )

# In the adjoining figure, if O is centre of circle, the value of ∠POR is

A. 20

B. 40

C. 60

D. 80

Answer :

In ΔORQ,

∠ROQ = 180 – 40 – 40

⇒ ∠ROQ = 100°

In ΔPOQ,

∠POQ = 180 – 10 – 10

⇒ ∠ROQ = 160°

∠POR = 160 – 100

⇒ ∠POR = 60°

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