Question

Guys please help me in solving this Q 28 please solve this Q with explanation ​

Answer 1

Answer: ↓

O is the centre of circumscribed circle.

OB = OC = radii

⇒  ∠OBC = ∠OCB = x

∴ x + x + ∠BOC = 180° (Angle sum property of △OBC)

2x + ∠BOC = 180°

∠BOC = 180° - 2x

Also,  ∠BOC = 2∠BAC

180° - 2x = 2∠BAC

⇒   90 - x = ∠BAC

∴ ∠BAC + ∠OBC = (90° - x) +  x

∠BAC + ∠OBC = 90°

Answer 2

Answer:

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