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MHT CET202020 Oct 2020Evening ShiftMathematicsPair of LinesActual

The angle between the lines y² ² -x y ² +x² ( ² -1 )=0 is

Options

  1. A4
  2. B3
  3. C6
  4. D2

Correct answer

D. 2

Step-by-step solution

We have y² ² -x y ² +x² ( ² -1 )=0 ( ² ) y²- ( ² )(x y)- ( ² ) x²=0 ( ² ) (y²-x y-x² )=0 ² =0 = 2 Note : sum of coefficients of x² and y² is zero.

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