If 2i +pj and 4i -2j are perpendicular, find the value of p.

FURTHER MATHEMATICS
WAEC 2021

If 2i +pj and 4i -2j are perpendicular, find the value of p.

  • A. 2
  • B. 3
  • C. 4
  • D. 5

Correct Answer: C. 4



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