Exam Question related to vectors last day thnx

[2012physics]

Homework Statement

All variables etc are shown in the question attached pictuer

Homework Equations

I have attached the question as in picture format

The Attempt at a Solution

please check the attempt i made at the question shown in separate picture attached and tell me please if its wrong or correct etc and if wrong then what happened that made it wrong lol.

 

[Mark44]

You will probably get more responses if you post the work you have done, rather than a hard-to-read photo of this work.