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Add math doubt...astar plz help

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astarmathsandphysics:
Resolving vertically: 1cos45=1/ ie j/

resolving horizontally  1cos45=1/ ie i/

unit vector is  i/+ j/=(i+j)/

Ghost Of Highbury:
could u plz provide me with a digram regarding its movement
does it move from O to P and then further parllel to the x-axis

wht does relative to the orgin mean?

Ghost Of Highbury:

--- Quote from: astarmathsandphysics on July 03, 2009, 01:53:56 pm ---Resolving vertically: 1cos45=1/ ie j/

resolving horizontally  1cos45=1/ ie i/

unit vector is  i/+ j/=(i+j)/

--- End quote ---
which rule have u applied
how come cos 45
where is 45 degree
plz explain clearly
i am totlly blank abt this question

Theguitarist:
i think astar explained it in a slightly complicated manner but u get (i+j)/ root 2 by simply finding the unit vector  :P which is the vector (i+j) divided by its magnitude which is root 2 (found by pythagoras of '1')

Ghost Of Highbury:
what are the steps to find a unit vector??

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