AP EAMCET Engineering 24 Apr 2017 Shift 1 Paper

Section: Mathematics

Question : 54 of 160

Marks: +1, -0

If the cosine of the angle between the two circles x2+y2+2x+4y−3=0 and x2+y2+2kx−2y−1=0 is

2√3

then k2=

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