Representation of data — practice question

One end of a light inextensible string is fastened to a fixed point $A$, while the other end is joined to a particle $P$. Particle $P$ travels at constant angular speed $5\,\text{rad s}^{-1}$ in a horizontal circle with centre $O$ directly beneath $A$. The string is at angle $\theta$ to the vertical (see diagram). The tension in the string is three times the weight of $P$.