In figure, DE and DF are tangents from a...

In figure, DE and DF are tangents from an external point D to a circle with centre A. If DE = 5 cm and `DE_|_DF`, then find the radius of the circle.

Text Solution

Verified by Experts

The correct Answer is:

5cm

Topper's Solved these Questions

CIRCLES
NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise Very Short Answer Question|7 Videos
CIRCLES
NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise Short Answer Questions|4 Videos
CIRCLES
NAGEEN PRAKASHAN ENGLISH|Exercise Problems From NCERT/exemplar|11 Videos
ARITHMETIC PROGRESSION
NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise Long Answer Question|5 Videos
CO-ORDINATE GEOMETRY
NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise Short Answer Questions|10 Videos

Similar Questions

Explore conceptually related problems

In Fig. 10.99, D E and D F are tangents from an external point D to a circle with centre A . If D E=5c m and D E_|_D F , then the radius of the circle is (FIGURE) (a) 3cm (b) 5cm (c) 4cm (d) 6cm

PA and PB are two tangents drawn from an external point P to a circle with centre C and radius=4cm If PA_|_PB then length of each tangent is

In the given figure, TP and TQ are tangents drawn from an external point T to a circle with centre O such that angleTQP=60^(@) . Find angelOPQ.

The length of a tangent from a point A at distance 5 cm from the centre of the circle is 4 cm. Find the radius of the circle.

The length of a tangent from a point A at distance 5 cm from the centre of the circle is 4cm. Find the radius of the circle.

In the given figure AP and AQ are tangents to the circle with centre O. BC is tangent at point R on it. If OA=17 cm and radius of the circle =8cm, find the perimeter of the triangle ABC.

Prove that The length of tangent from an external point on a circle is always greater than the radius of the circle.

If the angle between two tangents drawn from an external point ‘P’ to a circle of radius ‘r’ and centre O is 60^(@) , then find the length of OP.

If the angle between two tangents drawn from an external point P to a circle of radius 'a' and centre O, is 60^(@), then find the length of OP.

A circle with centre 'P' is tangent to negative x and y axis and externally tangent to a circle with centre (-6,0) and radius = 2. what is the sum of all possible radii of the circle with centre P ?

NAGEEN PRAKASHAN ENGLISH-CIRCLES-Exercise

From a point P, two tangents PA and PB are drawn such that PA=10 cm an...
Text Solution
|
From an external point P, tangents PA and PB are drawn to a circle. CE...
Text Solution
|
In the giben figure, AB is the diameter of the circle, with centre O a...
Text Solution
|
In the given figure, PA and PB are tangents to a circle with centre O....
Text Solution
|
In the given figure two concentric circles with centre O are of radii ...
Text Solution
|
In quadrilateral ABCD angled D=90^(@), BC=38cm and DC=25cm. A circle i...
Text Solution
|
Two tangent segments BC and BD are drawn to a circle with centre O and...
Text Solution
|
Prove that the tangents drawn at the ends of a diameter of a circle...
Text Solution
|
Prove that in two concentric circles, the chord of the larger circl...
Text Solution
|
Prove that the line segment joining the points of contact of two paral...
Text Solution
|
Prove that the opposite sides of a quadrilateral circumscribing a circ...
Text Solution
|
From a point P, two tangents PA and PB are drawn to a circle with cent...
Text Solution
|
The incircle of an isoceles triangle ABC, with AB=AC, touches the side...
Text Solution
|
In the given figure, a triangle ABC is drawn to circumscribe a circle ...
Text Solution
|
A circle is inscribed in a triangleABC having sides 8 cm, 10 cm and 12...
Text Solution
|
In the figure, PO|QO. The tangents to the circle with centre O at P an...
Text Solution
|
In figure, DE and DF are tangents from an external point D to a circle...
Text Solution
|
In a hexagon ABCDEF circumscribe a circle, prove that AB+CD+EF=BC+DE+F...
Text Solution
|
In figure, determine the measure of angleQSR, where O I the centre of ...
Text Solution
|
In figure, CPD and APB are common tangents to the two circles with cen...
Text Solution
|