Two tangents PQ and PR are drawn from an external point to a circle with centre 0. Prove that QORP is cyclic quadrileral.

Two tangents P Aa n dP B are drawn from an external point P to a circle with centre Odot Prove that A O B P is a cyclic quadrilateral.

Two tangents AB and AC are drawn from an external point A to a circle with centre O . If they are inclined to each other at an angle of 100^@ then what is the value of angleBOC.

two tangents RQ and RP are drawn from an external point R to the circle with centre O.If /_PRQ=120^(@), then prove that OR=PR+RQ

In Fig. two tangents RQ and RP are drawn from an external point R to the circle with centre O. If anglePRQ = 120 ^@ , then prove that OR = PR + RQ .

The lengths of tangents drawn from an external point to a circle are ________.

Prove that the lengths of tangents drawn from an external point to a circle are equal.

In the figure , PQ and PR are tangents drawn from and external point P to the circle with centre O. Q and R are the points of contact. If PQ = 5 cm then what is the length of segment PR ? Why ?