The measure of ∠ P in degrees of a cyclic quadrilateral PQRS if ∠R = 80^o  is

If two concentric circle have radii 5 cm and 3 cm then, the length of chord of the larger circle which touches the other circle is:

Which one of the following may be the central angle of a major arc

A, B, C, D are four points of a circle in the order. A and C are the end points of a diameter, then ∠ADB can be

The central angle of arc ABC is 220^o ∠ABC is

From a point P, the length of the tangent to a circle is 15 cm and distance of P from the centre of the circle is 17 cm. Then what is the radius of the circle?

In figure, PA and PB are two tangents to a circle with center O, from an external point P such that PA =  5 cm and < APB = 60^o. Then, the length of chord AB is

In figure, quadrilateral ABCD is drawn such that all its sides touch the circle. If AB = 7cm, BC = 4cm and CD = 5 cm, then, the length of AD is

From a point Q, the length of the tangent to a circle is 24 cm and the distance of Q from the centre is 25 cm. Then, the radius of the circle is

State " Equal; Tangent = Length" theorem