यहाँ
` vec a =2hati +2hatj -5hatk , vecb=2hat i + hatj +3hatk `
` therefore veca +vecb =( 2hat i +2hatj -5hatk ) +( 2hat i +hatj +3hatk ) `
` rArr veca +vecb =4hati + 3hat j -2hatk `
` rArr |vec a + vec b | =sqrt( 4^(2) +(3)^(2)+(-2)^(2))`
` rArr |veca + vec b| =sqrt (16+ 9+4) =sqrt 29`
` therefore ` सदिश ` veca + vecb ` के अनुदिश अभीष्ट मात्रक सदिश
` " " ( veca +vec b) /( |veca +vec b|) =(4hati+ 3hatj -2hatk )/(sqrt(29) ) `
` " "= (4)/(sqrt( 29) ) hati (3)/( sqrt(29)) hatj -(2)/( sqrt(29)) hatk `
