If the angle between the circles x^2+y^2-2x-4y+c=0 and x^2+y^2-4x-2y+4=0 is 60^\circ then c is equal to

AP EAMCET Engineering 2016 Code C Paper

Section: Mathematics

Question : 27 of 160

Marks: +1, -0

If the angle between the circles x2+y2−2x−4y+c=0 and x2+y2−4x−2y+4=0 is 60° then c is equal to

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