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Two intersecing vectors of equal magnitude have a resultant vector 3/2 times the magnitude of either of the two vectors .what is angle between two vectors.?
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Two intersecing vectors of equal magnitude have a resultant vector 3/...
Let the vectors be x.Thier resultant is also x according to the question.ie it is x.By parallelogram law.

r square = a square+b square+2abcos theta

here,x square = x square + x square +2xxcos theta

ie,x square=2x square+2x squarecos theta

ie,-x square=2x square cos theta

or cos theta= -1/2that is theta =120 degree
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Two intersecing vectors of equal magnitude have a resultant vector 3/2 times the magnitude of either of the two vectors .what is angle between two vectors.?
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