Bearings

[Martoman]

I can get the right answer to this question after using sine rule and cosine rule, but this is further, so it is slightly worrying I have to go to such lengths to get a simple bearing question.

Question: I travel 400m on a bearing of N75E and then 300 M on S50E. If I turn back from this position and travel all the way to the start again, what will be the distance and angle I travel on this third leg?

All I require is a simple method for this, or is using a combination of sine and cosine rules the only way?

[superflya]

the sine rule should suffice.