Nabla sine

$$\widehat{\sin}_p(t,s)=\dfrac{\hat{e}_{ip}(t,s)-\hat{e}_{-ip}(t,s)}{2i}$$

References

Nabla dynamic equations

$\nabla$-special functions on time scales

$\nabla$-$\widehat{\cos}_p$	$\nabla$-$\widehat{\cosh}_p$	$\nabla$-$\widehat{e}_p$	$\nabla$-$h_k$	$\nabla$-$g_k$	$\nabla$-$\widehat{\sin}_p$	$\nabla$-$\widehat{\sinh}_p$