Find Parallel Component of Vector B to Vector A | Basic Unit Vector Help

[RWirth91]

Homework Statement

Vector B has x- and y-components 2 and 6, respectively. Compute the component of B that is parallel to A.

A is 3i+4j

Homework Equations

The basic S(A)=B is all I know.

The Attempt at a Solution

No clue. Was absent yesterday. (Which is why I need help, lol.)

 

[kmikias]

what do you know about i-hat and j-hat .let me give you example from your question A is 3i + 4j .so which means 3 unit to the right and 4 unit up which actualy mean X- and Y- components .so according to this figure out what is 2 and 6 ...Read your textbook for more information

 

[RWirth91]

I don't think you understood the question I asked. I know that the axis are represented as I J & K, and that the equation is basically the coordinates for a point. I can find the magnitude, angle, and components to a basic vector or a resultant; I don't understand how to calculate a parallel vector between an existing vector and a component of a second.

Edit: A simple equation or example would help greatly, I just don't understand how you could apply S(A)=B to binomials that aren't multiples.