Kinematics: JEE Main 2020 Physics question

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