O is the centre of circle. PA and PB are tangent segment. Show that the quadrilateral AOBP is cyclic
Open in App
Solution
In quadrilaterial PAOB, Angle A = Angle B = 90 degrees (As PA and PB are tangents to the circle) Sum of the angles of quadrilateral PAOB = 360 Angle P + Angle A + Angle O + Angle B = 360 Angle P + Angle O + 90 + 90 = 360 Angle P + Angle O = 180 Since, the opposite angles of quadrilateral PAOB is 180, it is a cycline quadrilateral.