imo class 12 three dimensional geometry

The angle between line with DRs (1,1,0) and plane x+y=0 is:

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The angle between line with DRs (1,1,0) and plane x+y=0 is:

  • A. 0°
  • B. 90°
  • C. 45°
  • D. 60°

Answer: B) 90°

Explanation: Plane normal=(1,1,0), same as line direction. Hence line is perpendicular to plane.

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