How do you find a unit vector of 4i+3j?

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Answer 1 · 2016-06-21T20:53:45

#hatu=4/5i+3/5j#

Tony B

#color(blue)("Using ratios")#

Let unit vector be #hatu#

#(j_2)/(j_1)=(i_2)/(i_1) =1/5#

#i_2=i_1/5 = 4/5#

#j_2=j_1/5 = 3/5#

#hatu=4/5i+3/5j#