A man walks 8km north and then 5km in a dir..

Question 1 Report

A man walks 8km north and then 5km in a direction 60o east of north. Find the distance from his starting point

11.36km

12.36km

13.00km

14.36km

Answer Details

R = $\sqrt{5^{2} + 8^{2} - 2 \times 5 \times 8 \times c o s 120^{o}}$

R = $\sqrt{129}$

= 11.36km