Question

Find unit vector of a given vector A = 3i+4j​

Answer 1

Answer:

anwer, is 5.......√9+16=5

Answer 2

$â = \frac{a}{ |a| }$

now

|a| = √(3²+4²) = √25 = 5

|a| = 5

therefore the unit vectors are:

$â = \frac{3}{5} i \: + \frac{4}{5} j$