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? asked in Education & ReferenceHomework Help · 1 decade ago

physics homework help vectors?

if a vector B is added to vector A the result is 6i^+1j^ .if B is subtracted from A ,the result is -4i^+7j^.what is the magnitude of vector A?

Update:

pleez if u can give the detailed solution!

i shall be thankful

Update 2:

how did u get a and b!

1 Answer

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  • Anonymous
    1 decade ago
    Favorite Answer

    a is i+4j and b is 5i-3j magnitude is the square root of i^2+j^2 so its square root of 16+1, or square root of 17

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