Figure shows $ABCDEF$ as a regular hexagon. What is the value of $\overrightarrow {AB} + \overrightarrow {AC} + \overrightarrow {AD} + \overrightarrow {AE} + \overrightarrow {AF} $ (in $\overrightarrow {AO} $)
$\overrightarrow {AO} $
$2\overrightarrow {AO} $
$4\overrightarrow {AO} $
$6\overrightarrow {AO} $
If $|\,\vec A + \vec B\,|\, = \,|\,\vec A\,| + |\,\vec B\,|$, then angle between $\vec A$ and $\vec B$ will be ....... $^o$
The magnitude of a given vector with end points $ (4, -4, 0)$ and $(-2, -2, 0)$ must be
The vectors $5i + 8j$ and $2i + 7j$ are added. The magnitude of the sum of these vector is
The vector sum of two forces is perpendicular to their vector differences. In that case, the forces