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AP EAMCET201724 Apr 2017Morning ShiftMathematicsCircleActual

If the cosine of the angle between the two circles x^2+y^2+2 x+4 y-3=0 and x^2+y^2+2 k x-2 y-1=0 is 1 2 3 then k^2=

Options

  1. A2
  2. B4
  3. C16
  4. D8

Correct answer

B. 4

Step-by-step solution

No solution. Refer to answer key.

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