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Vectors

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18 Apr 2008 16:00:09 IST

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basic addition of vectors and resultant

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basic addition of vectors and resultant

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pink_ele

Blazing goIITian

Joined: 16 Jan 2007

Posts: 1836

18 Apr 2008 22:39:18 IST

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a vec+bvec=rt(a sq+bsq+2ab)
this is mod of resultant

RyuAmakusa

Blazing goIITian

Joined: 21 Mar 2008

Posts: 776

18 Apr 2008 23:36:45 IST

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well pink_ele if it was rt(a sq+bsq+2ab) then why write it like this u can write it

as |a+b| don't u see that there is something that is missing.............yes the angle beetween the vectors.

|a + b|(not the usual modulus) = ^{[2 ]}

(a²+b²+2abcos

) where

is the angle beetween the vectors.

Harsh

Cool goIITian

Joined: 18 Apr 2008

Posts: 44

18 Apr 2008 23:40:55 IST

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Hey are you forgetting angle made by vector

Angle made by resutant woth vector a is given by

tan inverse of bsin

/(a + bcos

)

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