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AP EAMCET20225 Jul 2022Evening ShiftMathematicsStraight LinesActual

If A (-3,3), B (1,1), C (1,-1) and D (-2,-2) are the vertices of a quadrilateral, the angle between the diagonals AC and BD is

Options

  1. A4
  2. B2
  3. C6
  4. D3

Correct answer

B. 2

Step-by-step solution

aligned & m_ A C = -1-3 1-(-3) =-1 & m_ B D = -2-1 -2-1 =1 & m_ A C m_ B D =-1 1=-1 aligned A C and B D are perpendicular Angle between A C and B D= / 2

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