Circles | Class 10 | Math

Questions covered in this video👇🏻 Q.1 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. The radius of the circle is Q.2 In Fig. 10.11, if TP and TQ are the two tangents to a circle with centre O so that  POQ = 110°, then PTQ is equal to (A) 60° (B) 70° (C) 80° (D) 90° Q.4 Prove that the tangents drawn at the ends of a diameter of a circle are parallel. Q. 7 Two concentric circles are of radii 5 cm and 3 cm. Find the length of the chord of the larger circle which touches the smaller circle. Q. 8A quadrilateral ABCD is drawn to circumscribe a circle (see Fig. 10.12). Prove that AB + CD = AD + BC Q. 9 In Fig. 10.13, XY and XY are two parallel tangents to a circle with centre O and another tangent AB with point of contact C intersecting XY at A and XY at B. Prove that  AOB = 90°. Q. 10 Prove that the angle between the two tangents drawn from an external point to a circle is supplementary to the angle subtended by the line-segment joining the points of contact at the centre. #class10maths #anjaliacademy5307 #mindx #circle #circleclass10