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Let PQ and RS be tangents at the extremi...

Let PQ and RS be tangents at the extremities of the diameter PR of a circle of radius r. If PS and RQ intersect at a point X on the circumference of the circle, then 2r equals:

A

`sqrt((PQ.)/(RS))`

B

`(PQ+RS)/2`

C

`(2PQ.RS)/(PQ+RS)`

D

`sqrt((PQ^2+RS^2)/2)`

Text Solution

Verified by Experts

The correct Answer is:
A
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