If $\vec{P}+\vec{Q}=\vec{P}-\vec{Q}$, then
If $\vec{P}+\vec{Q}=\vec{P}-\vec{Q}$, then
- A
$\vec{P}=\overrightarrow{0}$
- B
$\vec{Q}=\overrightarrow{0}$
- C
$|\vec{P}|=1$
- D
$|\vec{Q}|=1$
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- [JEE MAIN 2024]
Magnitudes of two vector $\overrightarrow A $ and $\overrightarrow B $ are $4$ units and $3$ units respectively. If these vectors are $(i)$ in same direction $(\theta = 0^o).$ $(ii)$ in opposite direction $(\theta = 180^o)$, then give the magnitude of resultant vector.
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Given that $\vec A\, + \,\vec B\, = \,\vec C\,.$ If $\left| {\vec A} \right|\, = \,4,\,\,\left| {\vec B} \right|\, = \,5\,\,$ and $\left| {\vec C} \right|\, =\,\sqrt {61}$ the angle between $\vec A\,\,$ and $\vec B$ is ....... $^o$