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If PN is perpendicular to QR, find the value of tan x.

Mathematics
JAMB 1980

If PN is perpendicular to QR, find the value of tan x.

  • A. \(\frac{5}{9}\)
  • B. \(\frac{3}{5}\)
  • C. \(\frac{3}{4}\)
  • D. \(\frac{4}{3}\)
  • E. \(\frac{5}{3}\)
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Correct Answer: Option B
Explanation

By Pythagoras QN = 4

Since, QR = 9, and QN = 4, then, NR = 5

Tan x = \(\frac{3}{5}\)

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