The phrase “doll-like figures” in the sentence can be replaced with “tiny figures” or “small people” to convey the image of the people working amongst the tea bushes in a miniature, almost delicate manner.

In the adjoining figure, TP and TQ are tangents drawn to a circle with centre O. If $\angle OPQ = 15^\circ$ and $\angle PTQ = \theta$, then find the value of $\sin 2\theta$. 