Points X, Y and Z are located in the same horizontal plane such that Y is 12 km north of X and Z is on a bearing of 270° from X. If |XZ| = 6km, calculate, correct to one decimal place, lYZl
-
A.
18km -
B.
13.4km -
C.
13km -
D.
10.4km
Correct Answer: Option B
Explanation
ZY(^2) = 12(^2) + 6(^2)
ZY(^2) = 144 + 36 = 180
ZY = (sqrt{180})
= (13.416)
= 13.4 km