Any tips regarding Vectors solving in PHYSICS?

[Muhammad TAimoor]

I would appereciate it alot if someone can help me out with these vectors..
I don't get the angles specifically..
Any notes or stuff or just anything!

 

[CaptainDanger]

http://www.wiziq.com/tutorial/84767-Notes-on-Vector-Physics

http://www.s-cool.co.uk/a-level/phy...ar-motion/remember-it/s-cool-revision-summary

 

[Muhammad TAimoor]

http://www.wiziq.com/tutorial/84767-Notes-on-Vector-Physics

http://www.s-cool.co.uk/a-level/phy...ar-motion/remember-it/s-cool-revision-summary

Thanks!