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There are two displacement vectors,, one...

There are two displacement vectors,, one of magnitude ` 3` metres and the other of `4` metres. How would the two vectors be added so that the magnitude of the resultant vector be (a) 7 metres (b) 1 metre and ( c ) 5 metres.

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(a) parallel , (b) antiparallel, (c ) perpendicular
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