XY is a chord o centred circle and is any point on the circle. If – InterviewSolution

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1.	XY is a chord o centred circle and is any point on the circle. If
Answer» TION:Step-by-step explanation:∠AOB+∠OAB+∠OBA=180°(Angle Sum PROPERTY)100°+2.∠OAB=180°∠OAB=40°→Radius OA is the PERPENDICULAR to the tangent at point A∠OAT=90°.→Thus, ∠BAT=∠OAT−∠OABThus, ∠BAT=90°−40°∠BAT=50°

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