Question

Find the unit vector of vector A=3i+4j-k

Answer 1

Unit vectors are of the form ˆ u=u|u| : ⇒ˆu=3i+4j−k|3i+4j−k|. ⇒ˆu=3i+4j−k√ 32+42+(−1)2. ⇒ˆu=3i+4j−k√9+16+1.