The values of $x$ and $y$ for which vectors $\vec A = \left( {6\hat i + x\hat j - 2\hat k} \right)$ and $\vec B = \left( {5\hat i - 6\hat j - y\hat k} \right)$ may be parallel are
$x = 0$, $y = \frac{2}{3}$
$x = - \frac{{36}}{5},y = \frac{5}{3}$
$x = - \frac{{15}}{3},y = \frac{{23}}{5}$
$x = \frac{{36}}{5},y = \frac{{15}}{4}$
A displacement vector of magnitude $4$ makes an angle $30^{\circ}$ with the $x$-axis. Its rectangular components in $x-y$ plane are .........
Two forces $P + Q$ and $P -Q$ make angle $2 \alpha$ with each other and their resultant make $\theta$ angle with bisector of angle between them. Then :
Explain resolution of vectors.
The projection of a vector $\vec r\, = \,3\hat i\, + \,\hat j\, + \,2\hat k$ on the $xy$ plane has magnitude
The vector projection of a vector $3\hat i + 4\hat k$ on $Y-$axis is