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Two equal vector have a resultant equal to either of them, then the angle between them will be: |
Answer» Hence ` A =F , B =F, R=F, theta= ?` As ` R^(2) =A^(@) + B^(2) + 2 AV cos theta` :. ` F^(2) =F^(2) + F^(2) + 2 FF cos theta` or ` cos theta =- 1/2 =cos 120^(@) or theta = 120^(@)`. |
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