Vectors using the component method

[farhana21]

Use the component method to add the vectors and shown in the figure. The length of is 2.55 m and the angle θ = 31.5°. Express the resultant + in unit-vector notation.

The answer should be in the form of ...i + ...j

so far i have done

3*cos(31.5) = 2.56 so this is for ...i but I am unsure of how to find vector j for the y axis.

Please could someone advise me. All help and guidance given is much appreciated

 

[mfb]

sin? ;)

I don't see a figure.

 

[farhana21]

Please see this thread for figure

https://www.physicsforums.com/showthread.php?t=670846

 

[mfb]

Well, my hint stays the same.
It is just trigonometry.