Question

A ship is sailing due east at 18 knots runs into a 3 knot current moving 40 East of North.
The resultant speed an direction of the ship are:

Answer 1

obtained by adding the two vectors:
(18,0)+(3cos(40),3sin(40))
=(18+3cos(40), 3sin(40))
=(x,y)
The resultant speed R is obtained by
|R|=sqrt(x²+y²)

Answer 2

good

Answer 3

A ship travelling due West at 16 knots runs into a current moving at 4 knots due
South. Find the resultant and direction of the ship.