Question

In adjoining figure, O is the centre of circle, A

∠ BAC = 50 degree , find Reflex ∠ BOC.​

Answer 1

Answer:

a circle with centre at O

∠BAC=50

∘

∠BAC=50

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∠BOC=2∠BAC

=2(50

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)

=100

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[arc 100

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BC subtends ∠BOC at the centre and ∠BAC at remaining part of circle ]

△OBC,OB=OC=radius

⇒∠OBC=∠OCB

( opposite angles of equal sides of a △ )

Now ∠OBC+∠OCB+∠BOC=180

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[Sum of angles of a triangle ]

⇒∠OBC=∠OCB+180

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∠OBC=∠OCB+180

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−100

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2∠OBC=80

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∴∠OBC=40

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Answer 2

Answer:

360 - 50 I think u can do

Step-by-step explanation:

hope it helps u