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The pair of tangents AP and AQ drawn fro...

The pair of tangents AP and AQ drawn from an external point to a circle with centre O are perpendicular to each other and the length of each tangent is 4 cm. Then, the radius of the circle is ... cm.

A

10

B

7.5

C

5

D

2.5

Text Solution

Verified by Experts

The correct Answer is:
D
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