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Home / Doubts and Solutions/NEET/Physical World And Measurement

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Asked by ashutosh25807 15th December 2017, 1:43 PM
Answered by Expert
Answer:
A - B = (3i+2j) - ( 2i + 3j-k) = (i -j -k)
 
unit vector = begin mathsize 12px style fraction numerator left parenthesis bold italic A minus bold italic B right parenthesis over denominator open vertical bar left parenthesis bold italic A minus bold italic B right parenthesis close vertical bar end fraction end style
open vertical bar bold italic A minus bold italic B close vertical bar space equals space square root of 1 squared plus 1 squared plus 1 squared end root space equals space square root of 3
unit vector is begin mathsize 12px style fraction numerator 1 over denominator square root of 3 end fraction bold italic i space minus space fraction numerator begin display style 1 end style over denominator begin display style square root of 3 end style end fraction bold italic j space minus space fraction numerator begin display style 1 end style over denominator begin display style square root of 3 end style end fraction bold italic k end style
Answered by Expert 15th December 2017, 2:21 PM
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