EX.4.5 Q.5, Thetangents drawn from the origin to the circle x2+y2-2kx-2ry+r2=0 are perpendicular if:

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Title: EX.4.5 Q.5

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Posted On: Jan 26, 2012 12:28 AM

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

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KAMAL RAWAT
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jitender lakhanpal

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Jan 27, 2012 07:12 AM

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