If the magnitude of the resultant of two vectors of equal magnitudes is equal to the magnitude of either vectors, then the angle between two vectors is?

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Gerardo Goodman · Accepted Answer

The answer to the question is that the magnitude of the two vectors&#039; resultant is equal to the magnitude of either vectorSo,Let             A      →       and             B      →       be given two vectors.We can write      |              A      →            |    =      |              B      →            |    =      |              R      →            |    =  xWe know that the magnitude of the vecors is given as  R  =            A      2        +          B      2        +    2    A    B    cos    ⁡    θ  or      x    2    =      x    2    +      x    2    +  2      x    2    cos  ⁡  θor  −      x    2    =  2      x    2    cos  ⁡  θTherefore  cos  ⁡  θ  =  −      1    2      θ  =      120    ∘

If the magnitude of the resultant of two vectors of equal magnitudes is equal to the magnitude of either vectors, then the angle between two vectors is?

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