Mustard is one of the major oilseed crops grown in India. It is used for producing edible oil and is a significant part of the agricultural economy. Other options like Bajra, Wheat, and Maize are not oilseeds; they are cereals.
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 $\sin 2\theta$. 