1. Tardigrade
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  4. The sum of two forces vecP and vecQ is vecR such that | vecR|=| vecP|. The angle θ (in degrees) that the resultant of 2 vecP and vecQ will make with vecQ is, .

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Q. The sum of two forces $\vec{P}$ and $\vec{Q}$ is $\vec{R}$ such that $\left|\vec{R}\right|=\left|\vec{P}\right|$. The angle $\theta$ (in degrees) that the resultant of $2\,\vec{P}$ and $\vec{Q}$ will make with $\vec{Q}$ is, _________.

JEE MainJEE Main 2020Motion in a Plane

Solution:

Hence angle $90^{\circ}$

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