Question

if vector A + vectir B = C then the magnitude of vector B is equal to​

Answer 1

Answer:

Given :

a

+

b

=

c

and a+b=c

So, c

2

=(

a

+

b

).(

a

+

b

)

Or (a+b)

2

=a

2

+b

2

+2

a

.

b

Or a

2

+b

2

+2ab=a

2

+b

2

+2abcosθ

So, cosθ=1

⟹ θ=0

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