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CBSE Class 11-science Answered

Show that vector A=2i-3j-k and B=-6i+9j+3k are parallel  
Asked by macjay303 | 27 Aug, 2019, 01:11: PM
answered-by-expert Expert Answer
If two vectors are parallel they can be expressed as scalar multiples of one another 
Lets say stack A space with rightwards arrow on top a n d space B with rightwards arrow on top are two parallel vectors then A with rightwards arrow on top equals lambda B with rightwards arrow on top space where lambda is  constant and not equal to 0 .
Here B=-6i+9j+3k can be written as -3(2i-3j-k)
Hence B with rightwards arrow on top equals negative 3 open parentheses A with rightwards arrow on top close parentheses
Therefore we can say that these two vectors are parallel.
Answered by Utkarsh Lokhande | 27 Aug, 2019, 03:52: PM

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