The shortcut key ‘Ctrl + Z’ is used to undo the last action performed on a computer. This is a standard function across most applications and software. It helps in correcting mistakes quickly and efficiently.
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 $\sin 2\theta$. 