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If from a variable point P(-2+2cos theta...

If from a variable point `P(-2+2cos theta, 3+2 sin theta)`, `theta in R` tangents are drawn to the circle `S:x^2+y^2+ 4x -6y+11=0`, then as `theta` varies locus of mid point of corresponding chords of contact will be (1) Line `x=3` (2) Circle concentric with circle S of radius 1 unit (3) Line `y=3` (4) Circle concentric with circle S of radius 2units.

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