Question

6. 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.​

Answer 1

Answer:

Given: Let the circle be with centre O

AB is the tangent from point A

Length of tangent = AB = 4cm

Also, distance of point from circle = 5 cm

Hence OA = 5cm

4 cm

B

А

5 cm

To find: Radius i.e. OB

Solution:

Since AB is tangent

Hence OB 1 AB

.Z OBA = 90°

(Tangent at any point of circle is perpendicular to the radius through point of contact)

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

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