The bearing of two points Q and R from a point P are 030^\circ and 120^\circ respectively, lf /PQ/ = 12 m and /PR/ = 5 m, find the distance QR.
A
13m
B
11m
C
9m
D
7m
E
5m
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
x\(^2\) = 12\(^2\) + 5\(^2\)
x\(^2\) = 144 + 25
x\(^2\) = 169
x = \(\sqrt{169}\) = 13m.
Source: Myschool Past Questions Archive (Record #23785)