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MHT CET202124 Sep 2021Evening ShiftMathematicsPair of LinesActual

The acute angle between the lines (x^2+y^2 ) +2 x y=0 is

Options

  1. A2 +
  2. B2 -
  3. C2

Correct answer

C. 2

Step-by-step solution

We have (x^2+y^2 ) +2 x y=0 a = , b = and h =1 and let be the acute angle between the given lines. Then = |2 (1)^2-( )( ) | + aligned & = |2 1- ^2 | 2 = 2 2 = = ( 2 - ) & = 2 - aligned

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