SOLUTION: find the length and direction for each of the vector if a. x=3, y=4

Algebra ->  Finance -> SOLUTION: find the length and direction for each of the vector if a. x=3, y=4      Log On


   

Question 1034341: find the length and direction for each of the vector if
a. x=3, y=4
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Take the Pythagorean sum...
r%5E2+=+x%5E2+%2B+y%5E2+=+3%5E2+%2B+4%5E2+=+25
so that
r = 5
The angle theta is
tan^(-1) = y/x = 4/3
so that
theta = 53.1 degrees