Question 1037930
A boat travels 19 nautical miles in a direction N 30 E and then travels 25 nautical miles south-east. Express each of these displacements in component form (East and North) and hence find the displacement for the whole journey in polar form. 
-----------
Use the Origin as the starting point, and 1 vertex of a triangle.
A is the 1st turning point.
B is the end point.
OA = 19 nm
----
The boat turns 105 degs clock-wise --> OAB = 105 degs
Side AB = 25 nm
----------
Use the Cosine Law to find side OC, the final distance from the Origin.
-------
Use the Law of Sines to find angle BOC.
etc.