in the given figure PT AND PS are the tangent segments to a circle with center O ,show that the points P,T,O and S are cocyclic
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Answer:
From figure, PA and PB are the tangents.
O is the centre of the circle.
To Prove : AOBP is a cyclic quadrilateral
Now,
OA is radius and PA is tangent
OA⊥PA
So, ∠OAP=90
∘
___(1)
Similarly, OB is radius and PB is tangent.
OB⊥PB
So, ∠OBP=90
∘
__(2)
Add (1) and (2), we have
∠OAP+∠OBP=90
∘
+90
∘
=180
∘
But these are opposite angles of the quadrilateral AOBP.
Therefore, Quadrilateral AOBP is a cyclic quadrilateral
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