Construction of Tangents to a Circle from a Point outside the Circle
Write True or...
Question
Write True or False and give reasons for your answer in the following:
A pair of tangents can be constructed from a point P to a circle of radius 3.5 cm situated at a distance of 3 cm from the center.
A
True
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B
False
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C
Ambiguous
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D
Data Insufficient
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Solution
The correct option is B False PisapointfromwhichatangentistobedrawntothecirclewithcentreO.∴Pmustbeoutsidethecircle.NowOPintersectsthecircleatR.∴OR=3.5cm(given)AgainOP=OR+RP=3.5cm+RP.∴OP>3.5cm.ButgiventhatOP=3cm∴ThestatementthatatangentcanbeconstructedtothecirclefromPisfalse.Ans−False.