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  • The equation of the chord of contact of the origin w.r.t. circle <img alt="\mathrm{ x^2+y^2-2 x-4 y-4=0}" src="https://entrancecorner.oncodecogs.com/gif.latex?%5Cmathrm%7B%20x%5E2&plus;y%5

The equation of the chord of contact of the origin w.r.t. circle \mathrm{ x^2+y^2-2 x-4 y-4=0} is
 

Option: 1

\mathrm{x+2 y+4=0}
 


Option: 2

\mathrm{x+2 y-4=0}
 


Option: 3

no chord of contact exist
 


Option: 4

none of these
 


Answers (1)

best_answer

Since \mathrm{S(0,0)=-4<0}
\mathrm{\therefore \quad(0,0)} is inside the circle. So no chord of contact exist.

Hence option 3 is correct.

Posted by

vishal kumar

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