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CBSE Class 12-science Answered

tell me the projection of vectors in detail with example ill check out videios still had problem  
Asked by saggugurupal | 21 Nov, 2016, 08:33: AM
answered-by-expert Expert Answer
begin mathsize 16px style Projection space that space straight b with rightwards arrow on top space on space straight a with rightwards arrow on top equals fraction numerator straight a with rightwards arrow on top times straight b with rightwards arrow on top over denominator open vertical bar straight a with rightwards arrow on top close vertical bar end fraction equals fraction numerator straight a with rightwards arrow on top over denominator open vertical bar straight a with rightwards arrow on top close vertical bar end fraction times straight b with rightwards arrow on top equals straight a with hat on top times straight b with rightwards arrow on top
and space Projection space that space straight a with rightwards arrow on top space on space straight b with rightwards arrow on top equals fraction numerator straight a with rightwards arrow on top times straight b with rightwards arrow on top over denominator open vertical bar straight b with rightwards arrow on top close vertical bar end fraction equals straight a with rightwards arrow on top times fraction numerator straight b with rightwards arrow on top over denominator open vertical bar straight b with rightwards arrow on top close vertical bar end fraction equals straight a with rightwards arrow on top times straight b with hat on top
So comma space the space projection space of space straight a with rightwards arrow on top space on space straight b with rightwards arrow on top space is space the space dot space product space of space straight a with rightwards arrow on top space with space the space unit space vector space along space straight b with rightwards arrow on top space and space the space projection space of space straight b with rightwards arrow on top space on space straight a with rightwards arrow on top
is space the space dot space product space of space straight b with rightwards arrow on top space with space the space unit space vector space along space straight a with rightwards arrow on top. space end style
 
Example:
The following example appeared in CBSE 2010 paper.
 
Example:
The following example appeared in CBSE 2013 paper.
Answered by Rebecca Fernandes | 21 Nov, 2016, 11:14: AM
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