Mathematics

Mathematics

Problem

The locus of the mid-points of the chords of the circle x2+y2−2x−4y−11=0x^2 + y^2 - 2x - 4y - 11 = 0 which subtend 60∘60^\circ at the centre is - (A) x2+y2−4x−2y−7=0x^2 + y^2 - 4x - 2y - 7 = 0 (C) x2+y2−2x−4y−7=0x^2 + y^2 - 2x - 4y - 7 = 0 (B) x2+y2+4x+2y−7=0x^2 + y^2 + 4x + 2y - 7 = 0 (D) x2+y2+2x+4y+7=0x^2 + y^2 + 2x + 4y + 7 = 0

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