State parallelogram law of vector addition . Obtain the expression for magnitude of the resultant of two vectors.
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The addition of two vector A and vector B is resultant vector R.
R = A + B
R = ( A2 + B2+ 2AB CosΘ)1/2
tan β = B SinΘ/ ( A + B CosΘ)
Where Θ is the angle between vector A and vector B And β is the angle which vector R makes with the direction of vector A.
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