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Manipal MET2017MathematicsPair of Lines

If the angle between two lines represented by 2 x^2+5 x y+3 y^2+7 y+4=0 is ⁻¹ m , then m is equal to

Options

  1. A1 / 5
  2. B1
  3. C7 / 5
  4. D7

Correct answer

A. 1 / 5

Step-by-step solution

gathered Here, a=2, b=3, h= 5 2 = 2 ( 5 2 )^2-6 2+3 m= 1 5 gathered

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