1.
Let P be the external point of the circle Let PR & PQ be the tangents to the circle such that PR = 12 cm. Then the length of PO is, (Where O centre of the circle and the radius of the circle is 5 cm.)
2.
In the following figure X, Y and Z are the points at which the in circle touches the sides of the triangle as shown below. If PX = 4 cm, QZ = 7 cm and YR = 9 cm, then the perimeter of triangle PQR is
3.
Let P be a point lies inside a circle then number of tangents to the circle from p is
4.
If TP and TQ are two tangents to a circle with centre O such that ∠POQ = 110°, then angle ∠PTQ will be equal to
5.
ABCD is a quadrilateral which circumscribe a circle, then AB - AD is
6.
In the shown diagram, O is the centre of the circle and angle ∠AMB =120°, the angle between the two tangents AP and BP is
7.
The radii of two concentric circles are 13cm and 8cm. AB is a diameter of the bigger circle. BD is a tangent to the smaller circle touching it at D. Then, the length of AD is
8.
Subtended angle in semicircle is
9.
In figure, chords AB and CD of the circle intersect at O. AO = 5cm, BO = 3 cm and CO=2.5cm. Determine the length of DO.
10.
AB & CD are chords of the circle intersect at E then length of ED, if AE = 2 cm , CE = 3cm & EB = 6cm