Answer:
c = 13.5 m
Explanation:
from the attached diagram, we can apply the cosine rule to get the resultant displacement (c) where
c = [tex]\sqrt{a^{2}+b^{2}-2.a.b.cosθ}[/tex]
θ + β = 180 (sum of angles on a straight line )
θ + 55 = 180
θ = 180 - 55
θ = 125 degrees
c = [tex]\sqrt{5^{2}+10^{2}-2.5.10.cos125}[/tex]
c =[tex]\sqrt{25+100-(-57.4)}[/tex]
c = 13.5 m