Math help?! Im so confused!?

Science & Mathematics by Anonymous 2018-05-19 13:08:46

Social Science

2 answers

Find a unit in the direction of u 1.F=<-1,-2> Unit vector in the direction of f 2. U=<9,-40> Unit vector in the direction of u

Anonymous

1. sqrt( (-1)^2+(-2)^2) = sqrt(5) <-1/sqrt(5),-2/sqrt(5)> 2. sqrt(9^2+(-40)^2) = sqrt(1681) =41 <9/41, -40/41>
Anonymous

The idea is to divide the given vector by its length. It his give a vector which is parallel and of length 1. And that is what you seek. Now that you know how, try it. Show your steps here if need be, else, you managed to compute it on your own!