Mathematics

The bearing of two points Q and R from a point P are 030° and…

The bearing of two points Q and R from a point P are 030° and 120° respectively, lf /PQ/ = 12 m and /PR/ = 5 m, find the distance QR.

  • A.
    13m
  • B.
    11m
  • C.
    9m
  • D.
    7m
  • E.
    5m
Correct Answer: Option A
Explanation

x(^2) = 12(^2) + 5(^2)

x(^2) = 144 + 25

x(^2) = 169

x = (sqrt{169}) = 13m.