TS EAMCET 5 May 2018 Shift 2 Solved Paper

Let (h,k) be the point of intersection of the tangent, then the chord of contact of tangent is the common chord of the circle x2+y2=12.
Now,
x2+y2−5x+3y−2=0
12−5x+3y−2=0
5x−3y−10=0
Also, the equation of the chord with respect to the point is, hx+ky−12=0
Therefore, the equation hx+ky−12=0 and 5x−3y−10=0 represent the same line.
This implies k=−

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