Why Does the X Component Disagree in Problem B?

[Analekt]

Pls help with number "B". The X component doesn't agree!

Ignore the data entered in the fields for X,Y(incorrect). I later figured Y component is "-1", but have no idea why X didn't work out.

Thx a lot!

 

[voko]

Show your 1-2-3-4 steps as per the hint.

 

[Simon Bridge]

Yep; if you don't show us the reasoning we cannot help except to do the problem for you, and that would be against the rules.