If |,vec A + vec B,|, = ,|,vec A,| + |,vec B, | vedclass

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(c) Resultant of two vectors $\overrightarrow A $ and $\overrightarrow B $ can be given by

$\overrightarrow R = \overrightarrow A + \overrightarrow

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(c) Resultant of two vectors $\overrightarrow A $ and $\overrightarrow B $ can be given by

$\overrightarrow R = \overrightarrow A + \overrightarrow B $

$|\overrightarrow R |\, = \,|\overrightarrow A + \overrightarrow B |\, = \sqrt {{A^2} + {B^2} + 2AB\cos 	heta } $

If $	heta = 0^\circ $ then $|\overrightarrow R |\, = A + B$$ = \,|\overrightarrow A | + |\overrightarrow B |$

If $|\,\vec A + \vec B\,|\, = \,|\,\vec A\,| + |\,\vec B\,|$, then angle between $\vec A$ and $\vec B$ will be ....... $^o$

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