Question

XY is a chord o centred circle and is any point on the circle. If <OXC = 45 <OCY is​

Answer 1

Step-by-step explanation:

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−∠OAB

Thus, ∠BAT=90°

−40°

∠BAT=50°

Answer 2

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