500 X 6 = 3000, then 6 X 1.6 = 9.6, so the answer is A, -9.6
To solve this problem you must apply the proccedure shown below:
1. You must apply the Law of Cosines, as you can see in the figure attached. Then:
- The first ship travels at
in for two hours. Therefore, the side
is:

- The second ship travels at
for
. Therefore, the side
is:

- Now, you can calculate
:

The answer is: 
Step-by-step explanation:
what is the condition of loss ?1)sp>mp 2)CP>sp 3) sp>CP 4)mp>sp