Thetangents drawn from the origin to the circle x2+y2-2kx-2ry+r2=0 are perpendicular if:


a.k=r


b.k=-r


c.k2=r2


d.k2+r2=1

2 years ago

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Answers : (1)

                                        

Dear,


 please find the attachment below


 


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2 years ago

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