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Science-Related Homework Help Physics Topic started by: il0veu08 on Feb 12, 2013



Title: How do I draw vector addition on a cartesian coordinate system?
Post by: il0veu08 on Feb 12, 2013
Say if I have 2 vectors, a and b:
    a = (3,4)
    b = (5,1)

I know that vector a + vector b = (8,5).

But how do I draw it and how can I prove or show that the resultant indeed is (8,5). The thing that confuses me is the location of the vector tails. Should the tails be in the origin for a and b?

Please help!


Title: How do I draw vector addition on a cartesian coordinate system?
Post by: rixa85 on Feb 12, 2013
use the head to tail method. place one vectors head at the end of the others tail and draw the resultant. and then use the formula c=sqrt(a^2+b^2) and to find the direction you take tan(B/A)


Title: How do I draw vector addition on a cartesian coordinate system?
Post by: tonio613 on Feb 12, 2013
Starting at the origin, draw vector a.

Then, starting at the head of a, draw vector b.

Then, draw a vector from the origin to the head of b.

This vector is a+b