Answer:


Step-by-step explanation:
See attachment for complete question
Let the position of the submarine be represented with X
Given



First, we calculate angle at X.




Solving (a): Distance AX: The distance between ship A and the submarine
To do this, we apply sine formula which states

In this case:

Substitute values for AB,
and 

Make AX the subject





Solving (b): Distance BX: The distance between ship B and the submarine
To do this, we apply sine formula which states
In this case:

Substitute values for AB,
and 

Make BX the subject




